Il y a deux trois truc à corriger dans le code qu'il t'as donné.
GetPlayerPos(playerid,playerPos[0],playerPos[1],playerPos[2]);
devient
GetPlayerPos(playerid,playerPos[0][playerid],playerPos[1][playerid],playerPos[2][playerid]);
et ça
SetPlayerPos(playerid,playerPos[0],playerPos[1],playerPos[2]);
SetPlayerInterior(playerid,0);
devient
SetPlayerPos(playerid,playerPos[0][playerid],playerPos[1][playerid],playerPos[2][playerid]);
SetPlayerInterior(playerid,0);