Further amendment to Shape5 Frontpage Joomla Module

I have a website that uses the Shape5 Frontpage module ([login to view URL]). For one the banners I need the banner image to be loaded from a dynamic location. The image will be located at images/Username/Dashboard/kpi-banner.jpg. The Username will need to be defined using the get_current_user() PHP variable. e.g. If get_current_user()="Duncan", then the top banner image will be loaded from images/Duncan/Dashboard/[login to view URL] ... If get_current_user()="James", then the top banner image will be loaded from images/James/Dashboard/[login to view URL] I have uploaded a cut down picture of the module parameters with this project. You will need to create a check-box to the right of the normal top banner image path. If the check-box is ticked, then the module will populate the top image banner from the dynamic file location as described above. PLEASE NOTE: You will not have access to the site itself. I can provide the original module code, but the developer will then need to talk me through making the changes to the live site.