Change file path of embedded pictures

Question

I'm sort of a beginner with Applescript, but I created an application in it that takes screenshots of different web pages and saves them in my Pictures folder. I have a proposal template in a Word document that has these pictures linked and embedded into it. Whenever I want to create a new proposal, I run the application and get the specified images I need, and update the links in the Word doc so that the new images display. I then break the links and save the doc as something else. 
Anyway, I have a colleague who would like to use this application. The files in the Word doc are linked to Macintosh HD/users/Me/Pictures. How can my colleague easily set all the images in the Word doc to their own file path, ie Macintosh HD/users/MyColleague/Pictures?
Something like
          tell application "Microsoft Word"
                    set the path of active picture to "Macintosh HD:Users:MyColleague:04-ReportMenu.jpg"
          end tell
Multiple salespeople will eventually be using this script. If I could add a function into my Applescript app so that whenever the proposal template is opened, the path to the images is changed to that users's picture folder, that would be amazing. Other solutions are welcomed.

Answer 1

Sure, thanks for the reply. My organization created a sales proposal generator in Word. It creates a sales proposal based on some user inputs. Embedded in the proposals are demonstrations of our product in the form of screenshots of our product from our website. One of our designers updates the standard images with customized branded images for the client we are pitching. It's very time consuming to get these new branded images from the web, crop them and swap them out in the Word proposal, so I created an app that will do it. The app visits a list of pages, takes a screenshot of the Safari window and pastes a named image in my Pictures folder. I embedded the images in the Word doc so that they link to my Pictures folder. All I have to do is update the links and I have a new branded proposal. It works great on my own machine, but if I share it, the path obviously breaks and the Word image update doesn't work.
Here's a snippet of my code. The following takes a screenshot of our site and saves it in Pictures:
  -- Report Screenshot
  delay 1
                    tell application "Safari" to set the bounds of the front window to {0, 20, 915, 935}
                    delay 0.1
                    tell application "Safari"
                              tell window 1 to set URL of current tab to "https://website.com/demox?rm=report"
                              delay 4
                    end tell
                    do shell script "screencapture -o -l$(osascript -e 'tell app \"Safari\" to id of window 1') ~/Pictures/05-Report.jpg"
          end tell
The links in Word update to the brand-specific images I just grabbed once I select Edit -> Links -> Update Now
I need a quick way, in Applescript, to update /Users/me/Pictures/photo.jpg to Users/MyColleague/Pictures.jpg in Word. Does this help at all??