How do I return a member name where a value is at a MIN / MAX

Summary:

I need to find the MIN / MAX value of a given account across the cross dims shown below and I can do that using the @MINS / @MAXS functions. 

Next, I want to find and store in Account members, the member names of CustomDim_1, CustomDim_2 and CustomDim_3 where the value of Account_1 is at a MIN / MAX. 

This is where I need some help with the code - How do I get the members?

Content (required):

Here is the Fix to find the MIN / MAX value.

Fix(“Jan”,”FY21","USD","Actual","Working",”No Plan Element”,

              "Entity_1",  

              "No CustomDim_1",

              "No CustomDim_2",