Fields Parameter in Power BI RS

Field parameters are still a preview feature. Preview features are never released in Report Server as there is no easy way for Msft to patch an on-prem server if any issues are found during the preview phase. Once this feature is generally available I would hope that we would see it appear in Report Server.

 Check the aternative given when I had the same question last week.

Solved: Field Parameters in Report Server - Microsoft Power BI Community

I will be trying this solution in the coming week and post how it went.