The "Cur" member in Text Function doesn't appear to exist in Mgmt Reporting

In the Financial Reporting Tool, I was able to reference a Current Row on a Report to get a dynamic member to pull. It would look something like this: AncestorName("Position", cur, (1)).

In Management Reporting, it appears that this function does not exist anymore. I can do the function: AncestorName("Position", 1, true, (1)), however it only references the 1st row and that is it. It does not dynamically reference the rows below it, it just repeats the same value in the Report. So, does anybody know if this function exists anymore? Mgmt Reporting is much better than Financial Reporting, but this is a function in the new tool that I cannot find.