Line item reference to a member from SUBlist
I have a line item in my model - X with a list format. This line item uses the SUB list (as format).
In another line item - Y I need to refer to a specific member from X , how should I do this?
I have tried with the SELECT function, but I get an error because it is difficult to reference a member from the SUB list, and the main list is not an X dimension.
Thank you in advance for the help.