Adding collision for static mesh assets using Blutility

Hello, please i need a fast answer.
I need to make a simple collision for imported datasmith walls and i don’t want to add collision one by one for each asset, i want to select all assets and make a blutility to add simple collisions for them all at once.

I found this in the documentation
but I’m not sure, where can i find the reference for the static mesh, i tried “Promote to variable” but it didn’t work.

Thank you all.