It is possible to define a combo component that get it's options from a dataprocessor instance automatically without an extra sync call like this. $$("my_richselect").getPopup().getList().sync($$("list1"));
It seems that you've meant DataCollection, not DataProcessor. If so, such synced options can be defined via suggest (options) body of a Combo view: https://webix.com/snippet/84c971fd
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