[Kaperstone]

First of all, why don't you save it into an array if he already put the mask on once before ? Faster and less load on the server when he tries to put a mask on.

Second, try to print the "PlayerInfo[playerid][pMaskName]" and "var" when he puts the mask on.
then just search for that print on the server console.
if everything is fine, then you're fetching the mask name not correctly.