Problems with web dynpro accessing R3 Tables

Hi,

i've developed a dynpro application that must update an R3 table, the problem i've found is:

when i try to write records in my table, it doesn´t fill any record, so i have a blank in every position of my table.

I don´t know wether the problem is in the Bapi or in the dynpro application.

Thanks everybody in advance.