Grid Header filter with multiple select : how to programmatically build a filter?

I’m looking for a way to have a filter in a header, in which I can select multiple values (select “A” AND “B” AND “C” instead of OR). I found the makeFilter() function of v5 but it’s not working on v6. is there an equivalent for V6 ?
Thanks in advance for answer

Unfortunately there is no makeFilter analog for the dhtmlxGrid 6.
I can suggest you to use your custom html inside the header with the custom filtering function.