Hi Jose Ricardo,
When FM is active it is used FMGLFLEXT table. This is a table with totals and if you weren't using FM you could use FAGLFLEXT or PSGLFLEXT for Public Sector. And ish't the 0L ledger.
With this table, this report is not prepared to be used.
What kind of information do you want to display? Did you already research if the S_ALR_* reports can help you? There're a lot of reports.
Also check the 981999 - No values or texts for FUND in New GL drilldown reports note.
JPA