a ok now i get it 

now i want make admin commands
look i these commands
_____________________
	if ( strcmp( cmd, "/bring", true ) == 0 )
	{
	new tmp[256];
  tmp = strtok( cmdtext, idx );
  if ( !strlen( tmp ) ) { return 1; }
	new Float:X, Float:Y, Float:Z;
	if ( GetPlayerVehicleID( strval(tmp) ) )
	{
	GetPlayerPos( playerid, X, Y, Z );
	SetVehiclePos( GetPlayerVehicleID(strval(tmp)), X+2, Y+2, Z );
	} else {
	GetPlayerPos( playerid, X, Y, Z );
	SetPlayerPos( strval(tmp), X+2, Y+2, Z );
	  }
	return 1;
	}
	if ( strcmp( cmd, "/goto", true ) == 0 )
	{
	new tmp[256];
	tmp = strtok( cmdtext, idx );
	if ( !strlen( tmp ) ) { return 1; }
 	new Float:X, Float:Y, Float:Z;
 	if ( GetPlayerVehicleID( playerid ) )
  	{
 	GetPlayerPos( strval(tmp), X, Y, Z );
  SetVehiclePos( GetPlayerVehicleID(playerid), X+2, Y+2, Z );
  } else {
  GetPlayerPos( strval(tmp), X, Y, Z );
  SetPlayerPos( playerid, X+2, Y+2, Z );
	  }
	return 1;
	}
 	if(strcmp( cmd, "/vehicle", true ) == 0 )
	{
		new Float:X, Float:Y, Float:Z;
		new tmp[256];
		new created_vehicle_id;
		tmp = strtok( cmdtext, idx );
		GetPlayerPos( playerid, X, Y, Z );
		created_vehicle_id = CreateVehicle( strval(tmp), X+2, Y+2, Z, 0, 0, 0, -1 );
		new msg[256];
		format(msg,256,"Created vehicle: %d",created_vehicle_id);
		SendClientMessage(playerid,0xAAAAAAAA,msg);
		return 1;
	}
_____________________
and if i want to make it admin command i need to add 
if isplayeradmin(playerid)
or some thing like that 
pliz help me