Not able to set the format of sub-total and totals on grid group

Applications Grid / Reports
#1

Hello,
I’ve tried all possibility but still have this problem on sub-totals and totals,
I can’t show 2 decimals as did for all other numbers of grid.
All the fields and parameter are all set to Currencys with 2 decimal.

total_group.png

#2

OK, SOLVED.
I forced to Currency, 2 decimal and without regional setting.
Strange that it didn’t work as Decimal…