# Play Blueprint Light In editor Without "Begin Play" (For a Sequence)

**URL:** <https://forums.unrealengine.com/t/play-blueprint-light-in-editor-without-begin-play-for-a-sequence/1366461>\
**Category:** Cinematics & Media\
**Tags:** unreal-engine, bug-report, editor, Rendering, Blueprint, question\
**Created:** [November 5, 2023, 8:28pm UTC](https://forums.unrealengine.com/t/play-blueprint-light-in-editor-without-begin-play-for-a-sequence/1366461 "2023-11-05T20:28:21Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Villager-13](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/villager-13/32/574804_2.png) [@Villager-13](https://forums.unrealengine.com/u/Villager-13)\
**Post date:** [November 5, 2023, 8:28pm UTC](https://forums.unrealengine.com/t/play-blueprint-light-in-editor-without-begin-play-for-a-sequence/1366461/1 "2023-11-05T20:28:21Z")

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So I have cars which I want to film in a sequence with and two of these are Police Cars. I want the lights to flash in a pattern, which I have, but I want it to play in the editor instead of the gameplay.  
 ![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/7/b/8/7b8d2d82e3f20c4687af5604598a766ee165a1a0.jpeg)  
(Happening in gameplay, bit I want it playing in editor instead).  
(If I try to add the sequence actor into the world It bugs out some stuff)  
What do I do?

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**Author:** ![joelbenjamin](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/joelbenjamin/32/754794_2.png) [@joelbenjamin](https://forums.unrealengine.com/u/joelbenjamin)\
**Post date:** [November 7, 2023, 4:45pm UTC](https://forums.unrealengine.com/t/play-blueprint-light-in-editor-without-begin-play-for-a-sequence/1366461/2 "2023-11-07T16:45:38Z")

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I’m not sure what you mean by adding the sequence actor to the world brings crashes, so maybe this won’t be helpful

But something I’ve done along these lines -  
Have a parameter in your blueprint to control the lights  
Make sure that parameter is exposed to cinematics and public

Then you can drag the blueprint actor into the sequencer and add those parameters in the sequencer to animate

Here’s an old post about it

> [@Modifying Blueprint Properties with Sequencer](https://forums.unrealengine.com/t/modifying-blueprint-properties-with-sequencer/460479):
>
> Hi guys, as the documentation in Unreal only refers to the same question but for Matinee (which will be deleted very soon) I wanted to add the same tutorial related to Sequencer… it would be soooo nice to be able to comment in the documentation of Unreal. That would make it so much easy to solve the failures it has by itself opening the door for community improvement. It takes a lot of hours to browse the forum, the answer hub and the deficient documentation pages… I had to open like 100 tabs an…

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<div class="post-metadata">

**Author:** ![Villager-13](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/villager-13/32/574804_2.png) [@Villager-13](https://forums.unrealengine.com/u/Villager-13)\
**Post date:** [November 11, 2023, 8:46pm UTC](https://forums.unrealengine.com/t/play-blueprint-light-in-editor-without-begin-play-for-a-sequence/1366461/3 "2023-11-11T20:46:29Z")

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So my issue is demonstrated in these photos. When I play the sequencer (dragged into the world) no tires show but the police lights do.

 ![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/c/5/2c5a4ce440324abc2ff04726f8c7f334c6a9c920.jpeg)

However, when I play in the sequencer (without pressing play level) the tires stay on BUT the lights don’t flash because of the “Begin Play” node in the script.

 ![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/1/8/c/18c5c721ed29b4193727862df3dc3e0d04a83f23.jpeg)  
 ![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/7/e/a/7ea0a7411f7a78157d3218d0a1a7dd2042599e25.png)

How do I let the lights auto-play without a “begin play” node?

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<div class="post-metadata">

**Author:** ![joelbenjamin](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/joelbenjamin/32/754794_2.png) [@joelbenjamin](https://forums.unrealengine.com/u/joelbenjamin)\
**Post date:** [November 12, 2023, 4:11pm UTC](https://forums.unrealengine.com/t/play-blueprint-light-in-editor-without-begin-play-for-a-sequence/1366461/4 "2023-11-12T16:11:24Z")

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Is there any reason you can’t put them in the construction script instead?