GetColumnsPreferences Func returns nothing in SAP 9.2 version

                SAPbobsCOM.CompanyService cmpSrv;                FormPreferencesService formPreferencesService;                ColumnsPreferences colsPreferences;                ColumnsPreferencesParams colPreferencesParams;                cmpSrv = _company.GetCompanyService();                formPreferencesService = (FormPreferencesService)cmpSrv.GetBusinessService(ServiceTypes.FormPreferencesService);                colPreferencesParams = (ColumnsPreferencesParams)formPreferencesService.GetDataInterface(FormPreferencesServiceDataInterfaces.fpsdiColumnsPreferencesParams);                colPreferencesParams.FormID = "169";                colPreferencesParams.User = _company.UserSignature;                colsPreferences = formPreferencesService.GetColumnsPreferences(colPreferencesParams);

             GetColumnsPreferences not returns anything..

Is there any solutions?