[RedJohn]

Try this to remove SERVER:Unknown command

With error message:

pawn Код:

public OnPlayerCommandText(playerid, cmdtext[])
{
   // codes here
   return SendClientMessage(playerid, color, "Blah blah blah");
}

Without error message:

pawn Код:

public OnPlayerCommandText(playerid, cmdtext[])
{
   // codes here
   return 1; 
}

[EDIT: FORGOT ; AFTER 1]