Hi, I am a Newbie to Basic4PPC so sorry if this is a dumb question!! I have modified the BigImage program I found elsewhere on the forum to add some more functionality. I hav added zooming to it and wanted to add a readout of mouse position over the image. However I have been unable to make this work. I have followed all the examples I can find on the forum and elsewhere but get an error: "Object Reference not set to an instance of an object." The relevant code is: Sub App_Start ...... img1obj.New1(False) img1obj.FromControl("Image1") img1mve.New1(img1obj.Value,"MouseMove") ....... Sub img1mve_NewEvent x = img1obj.GetProperty("X") '<error here! y = img1obj.GetProperty("Y") label1.Text = x label2.Text = y End Sub Can anyone help get me on the right track? David.