# Programming & Scripting **URL:** https://forums.unrealengine.com/c/development-discussion/programming-scripting/148.md?page=23 [Latest](https://forums.unrealengine.com/latest.md) · [Categories](https://forums.unrealengine.com/categories.md) · [Tags](https://forums.unrealengine.com/tags.md) **Page:** 24 --- ## [Getting blueprint assets with the asset registry in packaged builds?](https://forums.unrealengine.com/t/getting-blueprint-assets-with-the-asset-registry-in-packaged-builds/2794483)
**Author:** [@NuclearApplejack](https://forums.unrealengine.com/u/NuclearApplejack)\ **Replies:** 4\ **Last updated:** [October 1, 2026, 12:46pm UTC](https://forums.unrealengine.com/t/getting-blueprint-assets-with-the-asset-registry-in-packaged-builds/2794483 "2026-10-01T12:46:33Z")
I need to get the UClass and the CDO of every blueprint in a specific folder that is derived from a class UMyClass. In order to do this, I’m using the asset registry to load all UBlueprints in the folder. Here is a sim… --- ## [AutoCreateRefTerm and DeterminesOutputType on the same parameter breaks blueprint compilation ](https://forums.unrealengine.com/t/autocreaterefterm-and-determinesoutputtype-on-the-same-parameter-breaks-blueprint-compilation/2850809)
**Author:** [@anonymous-edc](https://forums.unrealengine.com/u/anonymous-edc)\ **Replies:** 3\ **Last updated:** [October 6, 2026, 10:36am UTC](https://forums.unrealengine.com/t/autocreaterefterm-and-determinesoutputtype-on-the-same-parameter-breaks-blueprint-compilation/2850809 "2026-10-06T10:36:12Z")
Hi! If you create a simple Blueprint utility function, for example: UFUNCTION(BlueprintPure, Meta = (AutoCreateRefTerm = "ObjectClass", DeterminesOutputType = "ObjectClass")) static const UObject\* GetDefaultObject(cons… --- ## [Why "Detect Enemies" of AIPerception not working?](https://forums.unrealengine.com/t/why-detect-enemies-of-aiperception-not-working/2834965)
**Author:** [@Ruslanmin2](https://forums.unrealengine.com/u/Ruslanmin2)\ **Replies:** 2\ **Last updated:** [October 1, 2026, 10:32am UTC](https://forums.unrealengine.com/t/why-detect-enemies-of-aiperception-not-working/2834965 "2026-10-01T10:32:54Z")
Please help! Why “Detect Enemies” of AIPerception not working? It is only works if enabled “Detect Neutrals” in AIPerception of AI Character. How to solve this issue? Is it engine bug? what i need to do additionally ? … --- ## [How can I build a video-on-demand system in Unreal Engine with a large video library?](https://forums.unrealengine.com/t/how-can-i-build-a-video-on-demand-system-in-unreal-engine-with-a-large-video-library/2835328)
**Author:** [@Suhebm](https://forums.unrealengine.com/u/Suhebm)\ **Replies:** 3\ **Last updated:** [October 1, 2026, 8:13am UTC](https://forums.unrealengine.com/t/how-can-i-build-a-video-on-demand-system-in-unreal-engine-with-a-large-video-library/2835328 "2026-10-01T08:13:04Z")
If I have a lot of videos, how can I create an Unreal Engine app where users can browse the videos and choose any video to watch? --- ## [How to control Metahuman FaceRig with OSC](https://forums.unrealengine.com/t/how-to-control-metahuman-facerig-with-osc/506987)
**Author:** [@AlexanderCGO65](https://forums.unrealengine.com/u/AlexanderCGO65)\ **Replies:** 1\ **Last updated:** [September 30, 2026, 10:37pm UTC](https://forums.unrealengine.com/t/how-to-control-metahuman-facerig-with-osc/506987 "2026-09-30T22:37:11Z")
Hi there, I have already a working OSC Reciever Blueprint, but I dont know how to control/connect the facerig curves to it to control them in realtime. What i want to achieve is to have predefined poses (curve values) wh… --- ## [How to make UE 4.27.2 work with Visual Studio 2026?](https://forums.unrealengine.com/t/how-to-make-ue-4-27-2-work-with-visual-studio-2026/2727642)
**Author:** [@KarenUnreal](https://forums.unrealengine.com/u/KarenUnreal)\ **Replies:** 4\ **Last updated:** [September 30, 2026, 8:50pm UTC](https://forums.unrealengine.com/t/how-to-make-ue-4-27-2-work-with-visual-studio-2026/2727642 "2026-09-30T20:50:37Z")
Hi everyone, I’m currently using Unreal Engine 4.27.2 and would like to work with Visual Studio 2026 instead of VS 2022. According to the official documentation, UE4 officially supports Visual Studio up to version 2022. … --- ## [Request for Verse WebAPI Access for Global Leaderboard ](https://forums.unrealengine.com/t/request-for-verse-webapi-access-for-global-leaderboard/2835841)
**Author:** [@2217](https://forums.unrealengine.com/u/2217)\ **Replies:** 0\ **Last updated:** [September 30, 2026, 8:24pm UTC](https://forums.unrealengine.com/t/request-for-verse-webapi-access-for-global-leaderboard/2835841 "2026-09-30T20:24:40Z")
Hello, I am a published Fortnite creator and I want to implement a persistent Global and Monthly leaderboard for my island. The leaderboard needs to work across different public server instances and display players eve… --- ## [Actor with physics constraint breaks when being moved fast](https://forums.unrealengine.com/t/actor-with-physics-constraint-breaks-when-being-moved-fast/2835800)
**Author:** [@Almazor\_008](https://forums.unrealengine.com/u/Almazor_008)\ **Replies:** 2\ **Last updated:** [September 30, 2026, 8:15pm UTC](https://forums.unrealengine.com/t/actor-with-physics-constraint-breaks-when-being-moved-fast/2835800 "2026-09-30T20:15:00Z")
Hi everyone, unable to fix the issue with physics constraint. I tried many options nothing helped. I have an child actor component that is attached to player camera, when I look up or down (pitch) two static mesh separ… --- ## [Raw UFastGeoContainer\* pointer assigned to a memory chunk getting GC'd ](https://forums.unrealengine.com/t/raw-ufastgeocontainer-pointer-assigned-to-a-memory-chunk-getting-gcd/2847070)
**Author:** [@anonymous-edc](https://forums.unrealengine.com/u/anonymous-edc)\ **Replies:** 3\ **Last updated:** [September 30, 2026, 7:53pm UTC](https://forums.unrealengine.com/t/raw-ufastgeocontainer-pointer-assigned-to-a-memory-chunk-getting-gcd/2847070 "2026-09-30T19:53:48Z")
Hi, We are getting some crashes when Loading into a new level. Basically we end up with FastGeo = 0xdddddddd FJob::FastGeo is a raw UFastGeoContainer\* pointer assigned to a memory chunk getting GC’d. So far we seem t… --- ## [Widget Animation Loop](https://forums.unrealengine.com/t/widget-animation-loop/2834739)
**Author:** [@AlferixStudios](https://forums.unrealengine.com/u/AlferixStudios)\ **Replies:** 1\ **Last updated:** [September 30, 2026, 5:20pm UTC](https://forums.unrealengine.com/t/widget-animation-loop/2834739 "2026-09-30T17:20:28Z")
So I have a system set up for my objectives that plays an animation through a widget to tell the player what the new objective is, and when it is completed. I’m currently stuck figuring out how to make it so that say an … --- ## [dibaca oleh siapa pun yang memiliki akses ke halaman ini. Pastikan untuk menghapus informasi sensitif ](https://forums.unrealengine.com/t/dibaca-oleh-siapa-pun-yang-memiliki-akses-ke-halaman-ini-pastikan-untuk-menghapus-informasi-sensitif/2835778)
**Author:** [@LowQuokka3951](https://forums.unrealengine.com/u/LowQuokka3951)\ **Replies:** 0\ **Last updated:** [September 30, 2026, 4:37pm UTC](https://forums.unrealengine.com/t/dibaca-oleh-siapa-pun-yang-memiliki-akses-ke-halaman-ini-pastikan-untuk-menghapus-informasi-sensitif/2835778 "2026-09-30T16:37:00Z")
dibaca oleh siapa pun yang memiliki akses ke halaman ini. Pastikan untuk menghapus informasi sensitif --- ## [Find macros in your blueprints?](https://forums.unrealengine.com/t/find-macros-in-your-blueprints/2835701)
**Author:** [@Skyboy](https://forums.unrealengine.com/u/Skyboy)\ **Replies:** 1\ **Last updated:** [September 30, 2026, 2:54pm UTC](https://forums.unrealengine.com/t/find-macros-in-your-blueprints/2835701 "2026-09-30T14:54:11Z")
Hey Something Ive never been able to work out is when I’m using macros. Unlike variables. Unreal just lets you delete macros with no warning. So I want to find all the places the macro was used to see if I still need … --- ## [Casting To BP's and data-assets](https://forums.unrealengine.com/t/casting-to-bps-and-data-assets/2835723)
**Author:** [@AvengingDiablo1](https://forums.unrealengine.com/u/AvengingDiablo1)\ **Replies:** 1\ **Last updated:** [September 30, 2026, 2:52pm UTC](https://forums.unrealengine.com/t/casting-to-bps-and-data-assets/2835723 "2026-09-30T14:52:45Z")
I’m working on an inventory system and while testing I’m not sure the best approach It is basically 3rd level of Data-Structure And a blueprint derived from it it goes like Pda\_Item =\> PDA\_Weapon =\> DA\_TestRifle =\> Wea… --- ## [Cant find Niagara event handlers section in emmiters](https://forums.unrealengine.com/t/cant-find-niagara-event-handlers-section-in-emmiters/562048)
**Author:** [@eldany.uy](https://forums.unrealengine.com/u/eldany.uy)\ **Replies:** 2\ **Last updated:** [September 30, 2026, 2:43pm UTC](https://forums.unrealengine.com/t/cant-find-niagara-event-handlers-section-in-emmiters/562048 "2026-09-30T14:43:14Z")
Hi! I know this is a very noob question. I just started digging Niagara Systems and I cant find the even handlers section in my UE5…I watch a lot of videos and they have this section. this is what I see in the videos: … --- ## [Bug - F2 Button to rename not working](https://forums.unrealengine.com/t/bug-f2-button-to-rename-not-working/2835684)
**Author:** [@Skyboy](https://forums.unrealengine.com/u/Skyboy)\ **Replies:** 2\ **Last updated:** [September 30, 2026, 1:01pm UTC](https://forums.unrealengine.com/t/bug-f2-button-to-rename-not-working/2835684 "2026-09-30T13:01:50Z")
Hey Ive had this issue since 5.7, I recently updated to 5.8 hoping it would fix itself and it did for a bit but now its back and I didnt realise How much I use this. F2 to rename just doesnt work. Ive tried every what … --- ## [The Steam Overlay doesn't work on Macos](https://forums.unrealengine.com/t/the-steam-overlay-doesnt-work-on-macos/2835687)
**Author:** [@arts.x](https://forums.unrealengine.com/u/arts.x)\ **Replies:** 0\ **Last updated:** [September 30, 2026, 11:34am UTC](https://forums.unrealengine.com/t/the-steam-overlay-doesnt-work-on-macos/2835687 "2026-09-30T11:34:20Z")
Hey, The Steam Overlay doesn’t work on the Mac. At first I tough it was a Steam issue because I tested the overlay with Baldi’s Basics and the overlay didn’t work on that either, but I tested with Geoguessr and for that… --- ## [PIE with Network Simulation shows other players jittery on server](https://forums.unrealengine.com/t/pie-with-network-simulation-shows-other-players-jittery-on-server/2832611)
**Author:** [@illYay](https://forums.unrealengine.com/u/illYay)\ **Replies:** 5\ **Last updated:** [September 30, 2026, 9:03am UTC](https://forums.unrealengine.com/t/pie-with-network-simulation-shows-other-players-jittery-on-server/2832611 "2026-09-30T09:03:46Z")
I’ve been testing networking in PIE and have network simulation enabled with the worst settings. I play with 3 players and listen server mode, so 2 other windows open for clients and the PIE window is the server. The c… --- ## [Generated nav link configs (NavLinkJumpConfigs) on placed RecastNavMesh always differ from CDO, so Project Settings changes never reach existing levels ](https://forums.unrealengine.com/t/generated-nav-link-configs-navlinkjumpconfigs-on-placed-recastnavmesh-always-differ-from-cdo-so-project-settings-changes-never-reach-existing-levels/2847066)
**Author:** [@anonymous-edc](https://forums.unrealengine.com/u/anonymous-edc)\ **Replies:** 4\ **Last updated:** [September 30, 2026, 7:14pm UTC](https://forums.unrealengine.com/t/generated-nav-link-configs-navlinkjumpconfigs-on-placed-recastnavmesh-always-differ-from-cdo-so-project-settings-changes-never-reach-existing-levels/2847066 "2026-09-30T19:14:09Z")
Summary When automatic nav link generation is enabled and a LinkProxyClass is set, every RecastNavMesh placed in a level ends up with a NavLinkJumpConfigs array that differs from the class default object, even if the us… --- ## [Will Unreal Engine 6 still support C++ if I don't want to switch to Verse?](https://forums.unrealengine.com/t/will-unreal-engine-6-still-support-c-if-i-dont-want-to-switch-to-verse/2731032)
**Author:** [@Mozart5372](https://forums.unrealengine.com/u/Mozart5372)\ **Replies:** 5\ **Last updated:** [September 29, 2026, 6:59pm UTC](https://forums.unrealengine.com/t/will-unreal-engine-6-still-support-c-if-i-dont-want-to-switch-to-verse/2731032 "2026-09-29T18:59:06Z")
Hi everyone, I have a question about the future of Unreal Engine. With all the discussion around Verse, I’m wondering if Unreal Engine 6 will still fully support C++ as a programming language. I enjoy using C++ and wou… --- ## [NPC Falling Forever](https://forums.unrealengine.com/t/npc-falling-forever/2834988)
**Author:** [@DigitalSketch](https://forums.unrealengine.com/u/DigitalSketch)\ **Replies:** 3\ **Last updated:** [September 29, 2026, 6:27pm UTC](https://forums.unrealengine.com/t/npc-falling-forever/2834988 "2026-09-29T18:27:05Z")
I have an NPC that is just falling forever. I don’t know what else to try. I’ve turned off physics and gravity, I’ve locked the Z position under the constraints, and I’ve turned off all collision with the collision capsu… --- ## [I need help with dragging in Unreal Engine.](https://forums.unrealengine.com/t/i-need-help-with-dragging-in-unreal-engine/2835214)
**Author:** [@Mesutayx](https://forums.unrealengine.com/u/Mesutayx)\ **Replies:** 1\ **Last updated:** [September 29, 2026, 6:24pm UTC](https://forums.unrealengine.com/t/i-need-help-with-dragging-in-unreal-engine/2835214 "2026-09-29T18:24:14Z")
Hello everyone, I am trying to create an object-dragging system in Unreal Engine 5 using Blueprints (similar to moving papers or documents across a table), but I am encountering an issue with boundary constraints. Here i… --- ## [Free UE4 Multiplayer Template Project - Listen Server, Steam](https://forums.unrealengine.com/t/free-ue4-multiplayer-template-project-listen-server-steam/116833)
**Author:** [@hamaro02](https://forums.unrealengine.com/u/hamaro02)\ **Replies:** 51\ **Last updated:** [September 29, 2026, 6:04pm UTC](https://forums.unrealengine.com/t/free-ue4-multiplayer-template-project-listen-server-steam/116833 "2026-09-29T18:04:25Z")
UE4 Multiplayer Template Hi All. I made this project because I think multiplayer games share most menu features. I thought it would be nice to not have to start over from scratch, every time I try some n… --- ## [Physics Objects Falling Through Floor](https://forums.unrealengine.com/t/physics-objects-falling-through-floor/1611523)
**Author:** [@SlickIlly](https://forums.unrealengine.com/u/SlickIlly)\ **Replies:** 8\ **Last updated:** [September 29, 2026, 5:41pm UTC](https://forums.unrealengine.com/t/physics-objects-falling-through-floor/1611523 "2026-09-29T17:41:49Z")
I’ve been seeing this issue frequently after spending significant time on different projects. It seems that adding physics simulated objects or physics constraints to the level could be causing this. The issue is not p… --- ## [How to center Text perfectly inside overlay + size-box](https://forums.unrealengine.com/t/how-to-center-text-perfectly-inside-overlay-size-box/2834541)
**Author:** [@Catrexis](https://forums.unrealengine.com/u/Catrexis)\ **Replies:** 1\ **Last updated:** [September 29, 2026, 5:39pm UTC](https://forums.unrealengine.com/t/how-to-center-text-perfectly-inside-overlay-size-box/2834541 "2026-09-29T17:39:20Z")
I have a simple Setup, a size-box (80x80 so that it matches the grid), an overlay inside, and a one lettered Text inside of that. I set the text to center vertically and horizontally, padding is symetrically defined,… --- ## [Question about intended use case for anim layer interface](https://forums.unrealengine.com/t/question-about-intended-use-case-for-anim-layer-interface/2834820)
**Author:** [@Killerbanaple](https://forums.unrealengine.com/u/Killerbanaple)\ **Replies:** 3\ **Last updated:** [September 29, 2026, 4:44pm UTC](https://forums.unrealengine.com/t/question-about-intended-use-case-for-anim-layer-interface/2834820 "2026-09-29T16:44:06Z")
I want to make a universal item animation blueprint that houses all of my item animations but does not require all to be loaded at a given time. I think anim layer interfaces would be useful for this, however, I am findi… --- ## [Unknown error when packaging](https://forums.unrealengine.com/t/unknown-error-when-packaging/2770232)
**Author:** [@Headless888](https://forums.unrealengine.com/u/Headless888)\ **Replies:** 16\ **Last updated:** [September 29, 2026, 4:30pm UTC](https://forums.unrealengine.com/t/unknown-error-when-packaging/2770232 "2026-09-29T16:30:14Z")
Hello! I am back here again after trying to unsuccessfully package my game. (I’d export and send the log but I just don’t know how to do that) My leading theory is that it has to do with plugins that are not up do d… --- ## [Star Quest on Steam](https://forums.unrealengine.com/t/star-quest-on-steam/2729742)
**Author:** [@usa423](https://forums.unrealengine.com/u/usa423)\ **Replies:** 2\ **Last updated:** [September 29, 2026, 3:41pm UTC](https://forums.unrealengine.com/t/star-quest-on-steam/2729742 "2026-09-29T15:41:58Z")
I know I don’t spend as much time over here as I did back in the day. Just been burned out really. But I am here today to thank this forum for helping me to learn UE. I know a lot of the time it was like pulling teeth … --- ## [Actor in level Not updating from blueprint editor.](https://forums.unrealengine.com/t/actor-in-level-not-updating-from-blueprint-editor/2835347)
**Author:** [@Skyboy](https://forums.unrealengine.com/u/Skyboy)\ **Replies:** 2\ **Last updated:** [September 29, 2026, 11:59am UTC](https://forums.unrealengine.com/t/actor-in-level-not-updating-from-blueprint-editor/2835347 "2026-09-29T11:59:32Z")
I don’t know how to explain this but I’m just assigning some tags. I added my tags. but I don’t need them so I deleted them. However. If I go to my level editor itself. and I click the same the blueprint Go down to… --- ## [Parameters not updating material instance](https://forums.unrealengine.com/t/parameters-not-updating-material-instance/2835216)
**Author:** [@extrantaves](https://forums.unrealengine.com/u/extrantaves)\ **Replies:** 1\ **Last updated:** [September 29, 2026, 5:30am UTC](https://forums.unrealengine.com/t/parameters-not-updating-material-instance/2835216 "2026-09-29T05:30:57Z")
I have an enemy material that is supposed to update its number when the health changes but recently it’s been stuck as the default values despite the parameters changing. It used to work until recently and I’m unsu… --- ## [Animation Blueprint Not Working When Character Moves – UE 5.3 Blueprint Only ](https://forums.unrealengine.com/t/animation-blueprint-not-working-when-character-moves-ue-5-3-blueprint-only/2664298)
**Author:** [@HoanLe76](https://forums.unrealengine.com/u/HoanLe76)\ **Replies:** 1\ **Last updated:** [September 29, 2026, 4:04am UTC](https://forums.unrealengine.com/t/animation-blueprint-not-working-when-character-moves-ue-5-3-blueprint-only/2664298 "2026-09-29T04:04:05Z")
Hi everyone, I’m running into a problem with my third-person character in Unreal Engine 5.3, and I hope someone here can help me figure it out. Problem Description: I’ve set up a character with a skeletal mesh and an… [Previous page](https://forums.unrealengine.com/c/development-discussion/programming-scripting/148.md?page=22) [Next page](https://forums.unrealengine.com/c/development-discussion/programming-scripting/148.md?page=24)