Android Question Bluetooth barcode scanner resets global variables when turned on/off

Sub Process_Globals

End Sub

Sub Globals
    Dim TestArray(10) As String
    Dim CurrentItem As Int = 0
    Dim Button1 As Button
    Dim Button2 As Button
    Dim Label1 As Label
    Dim Text1 As EditText
End Sub

Sub Activity_Create(FirstTime As Boolean)
    Activity.LoadLayout("TestArray")
    Button1.Text = "Prev"
    Button2.Text = "Next"
    TestArray = Array As String ("Item1", "Item2", "Item3", "Item4", "Item5", "Item6", "Item7", "Item8", "Item9", "Item10")
    CurrentItem = 0
    Label1.Text = TestArray(CurrentItem)
End Sub

Sub Text1_EnterPressed   ' BARCODE SCANNER ENTERED TEXT
    TestArray(CurrentItem) = Text1.Text       
    Label1.Text = TestArray(CurrentItem)
    Text1.Text = ""
End Sub

Sub Button1_Click
    CurrentItem = CurrentItem - 1
    If CurrentItem < 0 Then CurrentItem = 9
    Label1.Text = TestArray(CurrentItem)
    Text1.RequestFocus()
End Sub

Sub Button2_Click
    CurrentItem = CurrentItem + 1
    If CurrentItem > 9 Then CurrentItem = 0
    Label1.Text = TestArray(CurrentItem)
    Text1.RequestFocus()
End Sub