Power BI Pro with Azure Sql Can I partition data for several Dashboards

Have been using Power Bi Pro for a couple of days.

 

My Dataset is based upon one pre aggregated table and contains a column for User Id

I want to deliver six  Identically visual Dashboards to my Users.

But need a neat method to achieve.some 'data partitioning'..where UserId = 'the dashboard user's UserId'

 

I only want to create 1 Dataset...rather than a dataset per user!

 

There is an Enable Advanced Option when selecting Azure SQL ...so called Custom Filter supposed to honour SQL.

 

This does not appear to function and leads to Status Code 400 or 0 Errors

 

So if anyone has any ideas I would be very grateful