Ok, if you still haven't gotten it to work, look at this.
So say you want the money variable for an rpg to be gold. I am going to use 'Gold' as the example.
This should be a good method:
Onactivate>client(if you have the newest)>modvariable> Gold Add 1-- or whatever
Onactivate>client>(centerprint, bottomprint, or chatmessage)> You mine 1 gold, you now have <var:client(or 'cl'):Gold!
It would show up as," You mine 1 gold, you now have 1 Gold", and the more you click it would go up with it.