[mineralo]

try this

pawn Код:

stock XY(xx)
{
if(xx == 0) return 0;
else return 1;
}

when you will check put condition like

pawn Код:

if(XY(u) == 0)
{
SendClientMessage(playerid,-1,"NO");
}
else
{
SendClientMessage(playerid,-1,"YES");
}