Filters are not working on Page - NAV 2009 R2

Dear All,

My client wants to analysis the data as per the given filter. I have customized payroll module.
In that I create one page & taking 2 variables EmpCode & BranchCode. Also added a page as Part - Employee details.
& when user select empcode or BranchCode, in Subform/Part page the filtered data should be listed.

I tried for classic it works fine. But in RTC, page is not refreshed and also need to select twise the filter then only it works.

For your information I shared code, which I write on OnOpenPage() as well as on OnaftergetRecord() :

BCODE := 'HO';
CurrPage.DAttendLines.FORM.Set(EmpNo,BCODE); // Set function created in subpage to pass the value
CurrPage.DAttendLines.FORM.Update(True);

Please help.

Thanks in Advance,
Kavita Bavkar