Problem with conditional show of dimension in pivot table

[paolojolly]

Hi Guys, 

I have a small problem and I hope you can help me figuring out the reason behind it.

In pivot table I have to hide a dimension(FAMIGLIA) when the value of another dimension (PRODOTTO) is equal to 'CONTO TERZI'

I tried to work with conditional dimension, but I spent a lot of time without getting a result

Can someone help me?

thanks