Picturbox index separting

In every cmndbutton click a new picture box appears with an individual Index in my project....I want to separate this picture box as From_shape index and To_shape index......I tried it with Vbleftbutton and vbrightbutton .....the code is

VB Code:

If Button = vbleftbutton Then
              From_shape = Index
              End If
              If Button = vbRightButton Then
              To_shape = Index
              End If

The main problem is when I m going to add a new picture this picturebox is automatcally restore as From_shape...coz I use mouse leftbutton to drag it....Is there any option to Separate From_shape and To_shape index from common picturebox index?????