Wrong NLS_NUMERIC_CHARACTERS when runing Report from Builder

Hi,

We have some numbers stored in DB as strings with dot as decimal separator - and this works fine

(NLS_NUMERIC_CHARACTERS is ". ").

But when I run a Report from my PC (from Reports Builder), I get "not number" on values with dots.

Displaying the "NLS_NUMERIC_CHARACTERS" value from NLS_SESSION_PARAMETERS shows ", " and I can't

understand from where this comma appeared.

Can anyone explain how it can happen and how to fix it?

I can't and don't want to change any report because they all work in production environment.

Thanks in advance,

G.R.