Sort a Dimension in Listbox

[Frédéricdh]

I use the function Match to sort a dimension in the Sort Expression:

My Function is like Match ( Facility, 'A', 'B', 'C'), but when I click the ANL B, the order change and I see the convenient number for 'A' and 'C' is Null.

What must I do, to keep the right number

[Frédéricdh · Accepted solution]

I find it, u have to write this Match(Only ({1} Facility), 'A', 'B', 'C')

and i works