[Madzior_]

IMO you can do something like this:

pawn Код:

// on top
new DecreaseTime;

// in your public
DecreaseTime = GetTickCount(); // saving time of last decrease

// in your command
new x = 1800000 - (GetTickCount() - DecreaseTime); // 1800000 ms = 30 mins 
// now "x" is your left time (in ms)