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Power Bi Report Builder Optioonal Multi-Select Parameters

I tried 3 or 4 different ways of doing this but haven't figured this out.  I'm using power bi report builder desktop to build a paginated report with dataverse as the datasource.  I'm trying to make my multiselect parameters optional.  I tried using Power Bi Data service as my source with dax and have also tried to query dataverse directly.  What am I missing?


Im able to get all data back with the default value "ALL in the parameter...I can get one parameter to work as well.  The problem is I can't get the values to pass in if I select more than one value.  Below is my query with parameters in the where clause.




I tried to add a join to the parameter mapping and it still not allowing more than one value. I've tried =join(Parameter!dept.Label, "|") and =join(Parameter!dept.Value "|").  


Thanks in advance



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