> Would someone refer me to a working example

This basically does the same thing

http://home.clear.net.nz/pages/joecolquitt/0pots.html

measure  btfsc  pot        ;bump measure while pot pin is low
         goto   store      ;else jump out and store count
         incf   count1
         goto   measure

In your case, pressing a button is moving Vcc rather than in
my example, which moves the wiper, but to the cap it looks
just the same

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