[Patrick]

Yes, that is possible, example code shown below

pawn Код:

CMD:acmds( playerid, params[ ] )
{
    if(adminlevel >= 1) SendClientMessage(playerid, -1, "adminlevel 1"); 
    if(adminlevel >= 2) SendClientMessage(playerid, -1, "adminlevel 2");
    if(adminlevel >= 3) SendClientMessage(playerid, -1, "adminlevel 3");
    return true;
}

NOTE: Operator >= means larger or equal than the value.

EDIT: Too late, I was writing the meaning of the Operator