I’m very pleased to hear that my reply helped someone! 
Thank you for catching the error with destroying the button. I was not sure if the original poster wanted a single or multi-use button.
I realize I should have put a Print String that just said “Hello World” so the OP would know that this is where he or she is supposed to modify my answer to suit their needs.
If you want to be able to hit multiple buttons at the same time, replace Line Trace with a Multi-Line trace and insert a For Each Loop between the trace and branch. Break hit result for each array element.