OPInt Data Object -> Wrong data

Hi guys

In BPM we've added our model a "reporting activity with a RDS".

Then we import the in OPInt and we see the "Data Object".

By following the Developer guide we choose the key fields and add the attributes.

Then we generate the artifacts and access to the url <host>:<port>/sap/opi...

When we double click we see grid with the new columns, we added in BPM model, but the lines are empty.

In addition we've checked the content of the table BC_BPEM_EL_RDS and there are lines but in the fields there are "?" instead the data we've input.

Any idea what is happenning, how to fix it,...?

Cheers