Evaluate is not working for my custom function

Question

Hello everyone ,
I have a function , here's the code
CREATE OR REPLACE FUNCTION FU_BUSCA_RECD_PRDC_OBIEE(NIVEL   VARCHAR,
                                                    NM_AGPM VARCHAR) RETURN NUMBER AS
  V_RECD_PRDC NUMBER(10);
BEGIN
  IF NIVEL <> 'nivel1' THEN
    SELECT RECD_PRDC
      INTO V_RECD_PRDC
      FROM AGPM
     WHERE DC = NM_AGPM;
  ELSE
    SELECT RECD_PRDC INTO V_RECD_PRDC FROM RECD_PRDC;
  END IF;
  RETURN V_RECD_PRDC;
END;
So I want to use this :
Evaluate('FU_BUSCA_RECD_PRDC_OBIEE(%1,%2)' ,"Agrupamento de Fluxo (Hierarquia)"."Cód. do Agrupamento de Fluxo","Agrupamento de Fluxo (Hierarquia)"."Agrupamento de Fluxo")
I put it on a column but when I go to Results on Answer I get this error message:
HY000. Código: 10058. [NQODBC] [SQL_STATE: HY000] [nQSError: 10058] Erro geral. [nQSError: 43113] Mensagem retornada de OBIS. [nQSError: 43119] Falha na Consulta: [nQSError: 17001] Código de erro Oracle: 904, mensagem: ORA-00904: "FU_BUSCA_RECD_PRDC_OBIEE": invalid identifier at OCI call OCIStmtExecute. [nQSError: 17010] Falha de preparação da instrução SQL. (HY000)
Sorry the message isn't in english , but i don't have access to the settings to change it.
When I try to use evaluate with some native db function , for instance :
Evaluate('TO_DATE(%1,%2)' AS CHAR ,'20130326','YYYYMMDD')
It works
Does anyone know what's wrong ?

Answer 1

do i have to do anything after the grant?
i run the grant script , logged off from answer than logged in . is there any other step im missing?