mobile application form opening

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VB

Mobile

hi all i have created mobile application , my application contains 2 forms, if i click button it should open
secound form and close first form

when i do this my entire application closting .. so i created module do this to do

Module Module1
Private Sub main()
Dim k As New Form1
Application.Run(k)
End Sub
End Module

even if i create module same thing happening so expert please tell me how to do this