Hide some table row, letting visibile the sub-total

Hi all,

I'm trying to create a table with a classical break. I have 2 dimension (Region and City) and 1 misure (Sales). What I want is to create a break at Region level, having City as row details. Once done I want not to show the City with Sales < 1000$ but I want to show the Region...

Using filters or other techniques (es. Transform Sales <1000$ to Sales = 0 and use the table format property "Hide row with measure value = 0") when all the City of a Region have Sales <0 also the Region sub-total is hide.. but I need to see it? How can I manage it?

Referring to the table below, I need to view Region Liguria (the subtotal witouth filter and the other points are solved).

Regards

That's the required Output

That's the data Input