Problema Tutorial

COD:
linia:18018
skin[playerid] = CreatePlayerObject(playerid, 34553, 2300.21753, -4492.02905, 80.98200,   26.20000, 0.00000, 90.00000, 300.00);
Linia 18019
MovePlayerObject(playerid, skin[playerid], 1955.13171, -2492.62939, 15.30280, 35.0, 17.20000, 0.40000, 90.00000);

erori:
D:\Users\pp\Desktop\pp\gamemodes\GM.pwn(18018) : error 017: undefined symbol "playerid"
D:\Users\pp\Desktop\pp\gamemodes\GM.pwn(18019) : error 017: undefined symbol "playerid"