wpallimport plugin expert needed.

if you have worked with this plugin(wpallimport) and consider yourself expert in using advanced settings of this plugin(foreach loops, custom fields) only then apply for this project. i have maintained excel file for all details of products including description,titles,prices,pictures urls for each product .. also uploaded all the data to a woocomerce store using wpallimport plugin. only problem now is that each product has multiple variations(different sizes and colors).. for each product variation, i have to MANUALLY assign picture for that variation.. (see attached [login to view URL]) . see exp on following page [login to view URL] when user selects the color and size.. that color picture is updated on the left.. i want to automate this process.. instead of manually assigning pictures to each product variation, i want that variation images should be stored in excel file and are attached to products using wpallimport plugin.