# Applying constraints to a a rigidbody/physics enabled component **URL:** \ **Category:** World Creation\ **Tags:** Constraints, unreal-engine, CPP, question\ **Created:** [January 26, 2016, 11:37pm UTC](https://forums.unrealengine.com/t/applying-constraints-to-a-a-rigidbody-physics-enabled-component/345482 "2016-01-26T23:37:40Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![Daes](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Daes](https://forums.unrealengine.com/u/Daes)\ **Post date:** [January 27, 2016, 3:15am UTC](https://forums.unrealengine.com/t/applying-constraints-to-a-a-rigidbody-physics-enabled-component/345482/2 "2016-01-27T03:15:23Z")
There is a tutorial on creating dynamic constraint on the wiki: > **[A new, community-hosted Unreal Engine Wiki](https://forums.unrealengine.com/t/a-new-community-hosted-unreal-engine-wiki/141494)** > > After over a year in maintenance mode, the official Unreal Engine Wiki is now permanently offline. These resources now live on a new community-run Unreal Engine Community Wiki — ue4community.wiki! You will be able to find content from the official... You will find in it informations about the classes you need : UPhysicsConstraintComponent - FConstraintInstance Basic informations on constraint there: [Physics Constraint Component User Guide | Unreal Engine Documentation](https://docs.unrealengine.com/latest/INT/Engine/Physics/Constraints/ConstraintsBlueprints/) But, to be honest, i am battling with it a little, at least for initialization of physically based aactor. Defered Attachment is the key, in this particular case. For physics attached component, i used: ``` component->AttachParent = parent ; // Deferred attachment ``` instead of ``` component->AttachTo(parent); // direct attachment ``` Cheers --- _[View the full topic](https://forums.unrealengine.com/t/applying-constraints-to-a-a-rigidbody-physics-enabled-component/345482)._