Problems with charset in XML

Hello dear friends,

I’ve starting to use Toad, and I just create a little oracle database for testing. My language settings are SPANISH ISO-8559-1 both in operating system and in database.

I’ve create a table with a varchar col, and a xmltype.
And when I try to write some spanish accents “camión” it just turns back to “cami?n” after click “Post edit”.

Can you help me please how can I setup Toad to get this internationalization settings?

Thank you very much in advance.