Placing family on wall based on "Element.intersectsElement" Wall and RVT link categories

Hi all,
I am very new at Dynamo and i’m trying to make a script that does the following:

Check where RVT link(IFC) clashes with a wall(The yellow pipe), and place a family(the hole below the yellow pipe) with the diameter of said pipe.
I made a small start to do this as you can see in the screenshot but i dont know how to continue from here.

Could you help me in the right direction?