Oracle caracter set for code page in dataservices

Hi Experts,

I'm getting information from oracle to sybase IQ using dataservices but I have a problems with the ñ,ú,é,etc.

when i see the information about the Oracle, i have this

NLS_CHARACTERSET WE8ISO8859P1

NLS_ISO_CURRENCY AMERICA

NLS_CURRENCY $

NLS_TERRITORY AMERICA

NLS_LANGUAGE AMERICAN

and I have tried a lot of combination in the code page in the datastore in dataservices, but they are not working properly, canyou help me about this issue?