You’re almost there! The problem is that you never set up the New Var 0 variable. Think of your “New Var 0” variable as a Box that can contain “Weeping angel” objects inside of it. Right now it has the ability to contain such objects, but it is empty.
So the easy fix is, when you use the “Get all actors of class” node to get the location of the enemy, save the resulting object (the one you’re getting the location from) into your “New Var 0” variable. Then you’ll be able to call the “Dissolve” event for that specific “Weeping angel”.