Fail in to_date or to_number

[Enrique]

Hi Cognos colleagues !!

Does anyone knows why this Oracle(I m using a Oracle Database)  functions doesnt work in my report , since yesterday i m trying  different possibles and there is not way to make it work.,

I just want to do something too simple like that. 

to_date ('201509', 'yyyymm')  and i recive the  "QE-DEF-0459 CCLException"
                                                                           QE-DEF-0260 Fail in the Syntaxanalyse
                                                                           QE-DEF-0261 QFWP Syntaxanalysetext




Does anyone know something about that ?


Thanks in advance