[xVIP3Rx]

I didn't understand that very well but I'll try to describe it all in a little code

pawn Код:

SetProgressBarValue(barid, 25); // Now the value is 25
SetProgressBarValue(barid, GetProgressBarValue(barid)+10); // Now the value will be 25+10=35
new Float:Value = GetProgressBarValue(barid); // That will return 35 ( Value = 35 )