[Grim_]

You need to use the SetPlayerSkin function, which like it's name suggests, sets the skin of the specified player. You can find a list of available skin IDs here: https://sampwiki.blast.hk/wiki/Skins

For example, here is one you may be interested in using (ID 137): https://sampwiki.blast.hk/wiki/Image:Skin_137.png

An example how you would implement this into the command:

pawn Код:

COMMAND:valur( playerid, params[ ] )
{
   SetPlayerSkin( playerid, 137 ); // Set the player skin to ID 137
   SendClientMessage( playerid, COLOR_GREY, "Congratulation, you are a valur !" ); // Send the message
   return 1; 
}