Report Builder Query Design Retrieving Non Related Data From Power BI

Hi There!

I'm new to Power BI Report Builder and I came across a problem while trying to create my Dataset.

My DataSource is from a Power BI model and I have no problems so far, but when I try to create my DataSet, it seems the data doesn't have a relationship between different tables. I looked up all over the internet trying to find a solution but I couldn't resolve it... I'll post a simple example of what happens:

This is how the tables as related in Power BI, and it works fine on PBI Desktop

But when I get both columns ("Data" from dimCalendarMonth and "DataCriacao_" from factSales) in query designer on Report Builder, here's what happens:

Why is it happening? I'd REALLY appreciate if someone could provide me a solution.

Tks in advance.