I am using a GETPIVOTDATA function in Excel to source data from a pivot table generated by a Power BI query (everything was originally only in excel, the file got too large, so i stored the main tables in PBI but kept the reports in excel for mgmt's sake).
=GETPIVOTDATA("[Measures].["&$A$100&"]",'PIVOT Table_test'!$A$126,"[Master].[field1]","[Master].[field1].&["&C$26&"]","[Master].[AsofDate]","[Master].[AsofDate].&[2022-04-30T00:00:00]")
However, I want to make the GETPIVOTDATA function as dynamic as possible to prevent having too many hardcoded fields/items for each table that fields the charts we look at. However, when i reference the pivot table, the '[Asof]' field populates the static item as "...&[2022-04-30T00:00:00]")...
I have been trying to change that to reference a header row that contains a Short Date value (4/30/2022) like &["&$B&1"&"]")... but i keep getting #ref errors, every other field accepts the "&&" method, and when i leave the hardcoded timestamp in the formula, it populates.
So it has to be that reference but i do not understand what I am doing wrong. I have also tried changing the format of both the header row in Excel and the field within PBI but to no success.