Jira field as a dimension, applied to all levels?

In EazyBI for Jira.
I have a report to calculate all story points of Issues linked to Features via issue link type ‘implements’
It works fine and calculates the sum of Story POints for each features, and the global sum.
But when I add the PI (custom field) Dimension to the report, it doesn’t work well.
Only the features have this PI field filled with a value.
I still want the data of the sum of story points for all linked issues (link type = implements) of the features.

What am I doing wrong ? (I use the measures ‘Story points created’ and ‘Job size created’)

Hello all, the first description was wrong now that I’ve explored the problem more deeply.

Here is the situation:
We have:
Features with PI custom field
Stories linked to Features with implements link type, and they don’t have the PI custom field.

I have a page filter on PI.
It retrieves Features, but not stories linked. Without this page filter it works of course.
How to make it work with the page filter.