var id_Bank = 0x12345678
If UO.GetSerial('lastcontainer') == id_Bank then
  ...
Endif

sub CheckBankOpened()
  var idLastContainer
  uo.UseObject('backpack')
  wait(250)
  idLastContainer = uo.GetSerial('lastcontainer')
  uo.Msg('bank')
  wait(250)
  if uo.GetSerial('lastcontainer') <> idLastContainer then
    uo.Print('opened')
  else
    uo.Print('not oppened. lag or another container opened.')
  endif
end sub

sub CheckBankOpened()
  var idLastContainer
  uo.UseObject('backpack')
  wait(250)
  idLastContainer = uo.GetSerial('lastcontainer')
  uo.Msg('bank')
  repeat
    wait(100)
  until uo.GetSerial('lastcontainer') <> idLastContainer
  uo.Print('opened')
end sub

sub Bank()
OpenBank()
endsub

Sub DeleteJournal(St)
 While UO.InJournal(St)
  UO.SetJournalLine(UO.InJournal(St)-1,'')
 Wend
endsub

Sub OpenBank()
 DeleteJournal('your Bank Box')
 UO.ServerPrint('I want to see my account in thy bank')
 Wait(3000)
 If not UO.InJournal('your Bank Box') Then
  UO.ServerPrint('Hey! Where is my bank account?')
  Wait(3000)
  If not UO.InJournal('your Bank Box') Then
   UO.ServerPrint('Hurry! My bank account!!!')
   Wait(3000)
  EndIf 
 EndIf 
 If not UO.InJournal('your Bank Box') Then
  OpenBank()
 EndIf 
EndSub