Run a PS drilldown report using ABAP

Hello, I am trying to programmatically (ABAP) get data that is fetched using custom generated PS drilldown report.

The report can be called via CJE0 transaction (Execute Project Report) and by creating a transaction that uses the transaction START_REPORT with filled REPORTTYPE and EXTDREPORT parameters.

I've tried to run the generated report using the SUBMIT statement saving the output in the memory. I am not getting any data using this method, but a new spool request is created (the report will not run without the print checkbox checked).

How can I get the data that this report generates in a table format that can be used to access the data generated by this report?

Thank You!