Report Builder - Query Designer Error

Hello guys. 

I´m trying to create a dataset on Report Builder using a DAX query from a curren active Power bi Report, and I'm recieving this error. 

I'm new in power BI Report Builder so iam kind of drowning here. 

Any help or clue to track this error will be apreciated.

Query preparation failed. (Power BI Report Builder)

Query (84, 1) The syntax for '<pii>SELECT</pii>' is incorrect. (<pii>