Error on Passing Object between functions

[SaranKumarV]

HI All,

I am trying to write a reusable action for verifying weather obect exist or not but I am getting "Object does not support this Property or Method obj.Exist"

Code:

Set objxyzWin = SwfWindow("xyz")
IsMainWindowExist = WaitforObjExist(objxyzWin)
If  IsMainWindowExist = False Then
     Reporter.ReportEvent micFail,"xyz Main Window Exist","Unable to find  Main Window"
     ExitAction
End If

Reusable Action
Public Function WaitforObjExist(obj)

   temp = 1
   IsExist = False
      Do while temp < 30
        obj.Exist
        Wait(10)
   Loop
   If  temp < 30 Then
        IsExist = True
   End If
   WaitforObjExist = IsExist
End Function

Please help me on this