[Mean]

He said he gets Unknown command, and the gates still open ?
Have you put return 1; at the end of cmd:

pawn Код:

ThisIsACommand ( ... ) 
{ 
    //Stuff here
    return 1; // THIS IS WHAT I MEANT
}

?
If you haven't put the return 1, command will work, but it will say Unknown command
Also return 0 at the END of your OnPlayerCommandText:

pawn Код:

public OnPlayerCommandText ( playerid, cmdtext[ ] )
{
    command1
    { 
        return true; 
    }
    command2
    { 
        return true; 
    }
    return 0; // I MEANT THIS
}