Hi Guys,
I have a dashboard with a grid for users to setup Promotion Entries. The module behind this grid has a numbered list called Promotions and the line items in the module are used as references in the property formulas for this List.

I have another grid in the same dashboard with the Promotions and Customer lists included. The user can input data in Periods for each Promotion and Customer combination.

My question is: Is it possible to sync the Customer in the line item of first grid with the page selector for Customer in the second grid. For example if the user selects the Promotion line item it would automatically sync with the Promotion page and customer page in the grid below. Is there any way to apply this filter selection based on the fact that the Customer is a property of each Promotion List item?
Thanks in advance,
Michael