SSAS hierarchy

Hello

I'm trying to use SSAS hierarchy with Power BI

When I get data, I see my hierarchy

When I get data

But in my report, they don't appear as a hierarchy

The result I get

I was expecting that

The result I want

I just did it manualy on order to screen it but I don't want to ask to my user to do it each time

What did I miss? 

SSAS is multi dimentional, it's a 2010 version, database are in sql 2012

Thank you

Emmanuelle