role with powerbi report

Hello, 

I am new with Power Bi, and I need help.

I have created a report with power bi desktop (data come from a sql server database with direct query). With power Bi Desktop I have created a role "sogea"

I have test the role with the view as role button, and it's working well. (data are correctly filtered)

then, i have uploaded the pbix file to the report server

My question is : why I don't see the dataSets? and how I am supposed to assign the role to a user if I cann't see the datasets on the server?

thanks a lot