Add soucing rule information within material plan

From the material plan, we would like to have next to the item its assigned sourcing rule name. We already use the organization as a filter so it is already filtered according to the organization which is selected.

Following the Create Segment Groups and Criteria feature seen in this post, is there a way to add this soucing rule information? I managed to add the planner code to be used as a filter using this method but I cannot see how to add the sourcing rule.

Thanks for your help.

Alex