I want attach train bogey to body, but Physics Constraint don’t work with it
Working with constraints is a bit difficult so i would start with a simpler form and then work your way up.
Put some objects in a level and spawn constraints there.
After you have that working then work with the child actor in the same scenario.
Be sure you are not trying to constrain the child Actor Component and instead are using the Child property to get a reference to the actor itself.
The physics constraint checks if its a child actor and uses the root component if the constrained comp is a child actor. Pretty much does the exact same thing as working with regular components, just gets its root.