Android Question How do I access a control defined in Main with the Starter module

Sub GPS_LocationChanged (Location1 As Location)
    CallSub2(Main, "LocationChanged", Location1)
End Sub

Public Sub LocationChanged(Location1 As Location)
    lblLat.Text = "Lat = " & Location1.ConvertToMinutes(Location1.Latitude)
    lblLon.Text = "Lon = " & Location1.ConvertToMinutes(Location1.Longitude)
    lblSpeed.Text = $"Speed = $1.2{Location1.Speed} m/s "$
End Sub