[Lordzy]

You can try like thiS

pawn Код:

CMD:enter(playerid,params[])
{
   new bint;
   bint = GetPlayerInterior(playerid);
   if(bint == 0) //0 is the interior id of bank.
   {
     //Function here.
   }
   else
   {
     SendClientMessage(playerid, 0xFF0000, "You need to be in a bank to use this command.");
   }
   return 1;
}