I have A6 as the parent list and two sibling lists: A6.5 and A7. The A7 list includes an attribute that maps to A6.5. In the UX, the user will select A6.5 using a content selector, and the grid (dimensioned by A7) should display only the A7 items associated with that selected A6.5. Since the selector is a page context and not a line item, I’m unable to directly use it in a system module to qualify A7. Do you have any suggestions on how to achieve this?