Power BI Report Builder - Find User Name From Power BI Cloud

Hello,

Using Power BI Report Builder with reports running on Power BI Cloud with a data gateway, am trying to select the user name of the user viewing the report into a parameter.

From the Built-In Fields in Power BI Report Builder have access to User ID which in Power BI Cloud defaults to the user’s email address (e.g. [email protected]). I need to exact ideally the user’s username (e.g. CORPX\johnsmi) or if not possible the user’s full name (e.g. John Smith) and/or the user’s first name (e.g. John) and last name (e.g. Smith).

Is there a way to do this?

The only other user Built-In Field that have seen is language.

Thanks