Why can't filter multicombo^

Hi all,
check this Code Snippet, I’m wondering how to filter multicombo list data, as you see I can parse but cannot filter.

Thanks

@codejoin
you can filter list data in suggest’s onShow event
https://snippet.webix.com/2trzuyq6
you can filter data just before parse as well
https://snippet.webix.com/i8c0bg94

@intregal
Thank you.