SOLVED !!! Custom field date format dd-mm-YYYY

Hi,
I created a date type custom field . The date format is YYYY-mm-dd by default.
I really need to be dd-mm-YYYY, for is the standard date format in my country.
I have no problem in hardcoding if you give me the right instructions.
Thanks a lot.

Hi
You need to modify in file Root > administrator > components > com_jdonation > libraries > osf > form > field > data.php
Change the code " %Y-%m-%d " to " %d-%m-%Y "

Thanks
Quan

Perfect! Thank you very much.