Parameter value being sent under another parameter name.

Hello, 

I am querying an oracle database through OLE DB. I have created 3 parameters, 2 dates and 1 number. 

Since the query was not working properly, I tried debugging it.

First, I created a shared dataset with:

select :p_fecha1, :p_diasp, :p_fecha2 from dual;

I created a table with these values, and this is what I get:

I really have no idea what is happening. The value of P_Fecha2 is being assigned to DiasP and DiasP is being returned with Fecha2. I'm sure I must be missing something but I can't find it. Does anyone know what is happening here?