Applescript to replace a picture in a Word document

Question

I am trying to create an Applescript to control Microsoft Word to replace a selected image in a document with a new image from a file.  The extracted problematic code is below.
  -- prior code sets up variables and seems to be working fine.
                    set {start of content:t_start, end of content:t_end} to text object of selection
                    set float to shapes of active document whose end of content of its anchor ≥ t_start and end of content of its anchor ≤ t_end
                    if float is not {} then --replacing a floating image as opposed to an inline image
                                   repeat with pic in float
            set a to anchor of pic
            set t to top of pic
            set l to left position of pic
        end repeat  -- repeat is not logically necessary but Word seems happier
         tell active document
            set np to make new picture at a with properties {file name:tfile2, save with document:true}
            set relative vertical position of np to rvp
                                                 set top of np to t
            set left position of np to l
         end tell
         delete pic
                    else
     -- rest of code handles when no selection exists or the selected image is inline and is working fine.
Everything is working fine - the existing picture is deleted and the new one is inserted and moved to the correct position but always on the FIRST page.  The anchor put into a contains the location of the old picture's anchor (which might have a start of content set to 2000 say) but when the new picture is created at a, the new picture is always created with an anchor with a start of content of 0 - regardless of the value in the original anchor.
What I need is either to create the new picture with an anchor that is on the old page OR move the anchor to the old page after creation - neither of which I have managed to achieve so far.
Any help or suggestions greatly appreciated.

Answer 1

The solution to this problem is to make the new picture using this command
set np to make new picture at a with properties {file name:tfile2, save with document:true, anchor:a}
Silly me.  I though that making the picture at "a" would set the anchor to "a".