[BroZeus]

like this

pawn Код:

CMD:up(playerid,parmas[])
{
new hi;
if(sscanf(parmas,"i",hi))return SendClinetMessage(playerid,-1,"{ff0000}wrong usage do /up height");
new Float:x,Float:y,Float:z;
GetPlayerPos(playerid,x,y,z);
SetPlayerPos(playerid,x,y,hi);
return 1;
}