How to make collision from code?

I Want to simulate a physical collision but not from an actual actor on the scene. I want to simulate this from the blueprint or the c++. the reason is that I have a physical animation set up and I want to apply impact on the physic assets. I activated physics but that did not help either. is there any way to do this ?

my end gole is to apply force on the bone i want and be able to control the amount of the force

did you try the node “add impulse at location”?
you can enter a location and a socket

seems my problem was rather wrong collision set up. that’s why initially “add impulse at location” was not working.