How to add special logic behind a filtering field

[#1]

Hi,

I would like to ask for advise on how to deal with this issue. I created a Origin Port and Destination Port field listbox filtering in the QV report. Origin Port is set to 'HKG' by default for example and nothing preset in Destination Port field. I also have a Checkbox field (called vice versa indicator) which is checked by default to indicate that I need to do a filtering behind the report to filter Origin Port = 'HKG' OR Destination Port = 'HKG'. If the checkbox is not checked, it means that I only need to filter Origin Port = 'HKG'. May I know how to add this logic in QV?

Thanks,

YY

[Gysbert_Wassenaar]

OR selections are quite hard. Perhaps this blog post helps: Or-mode selections in QlikView The Qlik Fix!