Duplicated instance blueprint: know if active or not

Hello world !
I have a big problem since yesterday,

I have a blueprint instance with “looking action” ,
When I look a mesh, I change of camera which is at the same place as the mesh.

I desactivate this mesh collision “OnBeginOverlap” ( a mesh around camera, it works), but i can not activate collision in all others instances of my duplicated bluprint … So when i have seen the point, i can not go there again after.

I have trying to add onEndOverlap but can not find the fonction…

Thanks for your help guys

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Trying to do it, OnBeginOverlap works, but the collision before changing camera won’t works,
Maybe because i need a custom collision option ? (like by default), but how can i do that in blueprint ?
Thanks