Relink does not seem to work

I have the following line in my script:

myDocument.Pages(x).AllGraphics(y).ItemLink.Relink "c:\...\myPicture.jpg"

I intend to relink the picture to the graphic placeholder, but when I open the document after the script is executed, it still prompts with the window of "Fix Links Automatically". What did I do wrong? Thank you.