How to get the primary resource breakdown structure in OTBI custom report?

Summary:

I have created an OTBI analysis that is similar to the project performance report using the subject area of "Projects - Performance Reporting Real Time", the issue is that I can't get the primary resource breakdown structure even if it's already assigned to a specific project for which the standard performance report is already updated and this makes the default breakdown - of the main four resource class to appear- .

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