Account attribute for Entity list for N:N relation entity

Hi all

Can you help me with this issue?

We have created several Price lists that can relate to different organizations. At the same time each organization can have a relationship to several Price Lists.

We have created relation N:N between Price lists and Organizations. Also we have  created Entity list for Price lists and want to add "Account Attribute" filter, but it doesn't show in drop down list for "Account attribute". 

As I understand "Account Attribute" filter works appears only when relation 1:N exists.

How it is possible to show on a portal list of Price lists related to the organization to which current portal user belongs?