I have a sheet with a multi-select column (Law Firms) and I wish to show a chart in my dashboard that displays a count of the unique firms in that column. I created a separate metrics sheet with one column (Law Firm Names) containing each unique value contained in the multi-select column. In my other column, I'm using a formula to count the instance of each value in the Law Firm Name column that appears in the original multi-select column. My formula is not quite working out.
Sheet 1: Active Cases
Multi-Select Column: Law Firms
Sheet 2: Metrics Helper
Column 1: Law Firm Names (contains unique entries from multi-select column in other sheet)
Column 2: Count of Law Firms
Formula in Count of Law Firms: =COUNTIF({Active Cases Range 1}, HAS,@cell,[Law Firm Names]))
Can someone please provide guidance on my formula?