Is there a specific way for something to refer to its own properties in a gui?

I am trying to make a working chess set. The way I have things set up now, a lot of my code has to be manually manipulated 63 times for pushbuttons (what I am using as tiles) to refer to themselves.

Instead of having, say, the code for pushbutton A1 be: set(handles.A1,-----) I want it to be set(handles."-",----- where the "-" is something that would refer to A1 in this case, but A2, A3,...H8. This way I could write the code for 1 square and copy paste it to all other 63. I've tried to search around for it, but I don't know exactly what to search for since I have no idea what it would be called.