Hi @mbp1343 
I’m imagining you may be posting in the wrong area. Are you using thinkable X?
in your example, the fact that it ever works is a miracle.
you really are trying to add two text strings (even though you have it as a number, its really a text string because you put it in a text viewer}
when you want to add two integer values, you should save the value to a variable. Please see my tutorial here