RPAS: Measure SKU Picklist for Like Item with Same Attributes e.g. brand

Hi RPAS experts,

I have been trying to figure out how to do this. I would like to do a dynamic pick list, say for example if my New item has an specific brand and segment, e.g. CoolPad and Laptop. The SKUs within the picklist should only show CoolPad and Laptop.

I have already tried CMAttributesPickListExpr and ConcatExpr but no luck. These function combine CoolPad or Laptop items.

Do you know other way to do it?

Thanks!