Total with sumx and more variables

Hello,

I need your help to calculate the total of a deviation.
I have three tables, the main one is the sales table, another one is the product table and another one is the customer table.

In the sales table, I have everything related to the income with the quantities sold, with several filters we have the quantities sold vs the budgeted for certain customers and certain products.
I am trying to get a deviation in the sales price vs what was sold, and I just want a function to help me find the price deviations, where I have sales with the budget (marked in green), however, the functions give me the total.
I have applied the DAX with
sumx ( filter('Product', [Sales] >0 && [Budget]>0 ),calculate([Quantity] * [Dev] ) )

But it doesn't work, it makes me the groupings by customer of his budget and his real sales, when I need the filter by customer and product.