Hi all Professional Powerapp Users, Im New in Here,
In my Canvas App, I have combobox with On Change like this to create Multifilter while on selected.

and I put Items on the gallery

If(IsEmpty(Multifilter2),'DataSource',Filter('DataSource',Jenisvaksin1 in Multifilter2.Value))
but when I try to Select filter I want, for example I choose for typhoid, But in the Gallery Screen it didnt Display As I want which is "Typhoid"only.

Also When I tried to Select Multi Selection on Combobox, it shows Nothing.

I dont know what happen to my Formula, any body knows the problem is ?
pls help me !