Dynamic Row level Security with Azure Analysis Service

[Anonymous]

I'm using Azure Analysis service for a Power BI, i have one doubt in Dynamic row level security. Im using USERNAME() & LOOKUPVALUE function to provide security here.

Is it possible to provide access to all the users to all the AD Groups, if there is NULL present in <search_value> of the LOOKUPVALUE function?

suppose, there are 100 users who are part of 10 AD Groups, and access to these users are provided based on the AD Group Code. (AD Group 1, AD Group Code1 ................)

AD Groups codes are associated with some Products, if there no AD Groups Available for a Product, then that product should be visible to all the users. Is this Possible?