Hi Feliciello,
It's better to use the GetCellSpecific method of the matrix to return the cell you want to read as this method is more efficient.
oEdtxt = (SAPbouiCOM.EditText)om.GetCellSpecific("14", pVal.Row);
Apart from that, I would go with Maik's suggestion of using the SerializeAsXML method.
Kind Regards,
Owen