Android Question Accelerated surface camera

[Eme Fibonacci]

I Have bitmap (android)
He is drawn on canvas.
When I try change the camera position nothing happen. Whats is wrong?

Sub Surface_Draw(AC As AS_Canvas)

    AC.CameraSetLocation(480,400,-8)  '<--nothing happen
    AC.DrawBitmapAt(android,100dip,100dip)
          
End Sub

Thank you.