Date format for filter in datatable

Hello,
i try to implement a range filter in a datatable.
The format in the col is dd.mm.YYYY
The format in the filter is dd.mm.YYYY - dd.mm.YYYY
But it doesn’t work.
Any help?

General settings:

      webix.i18n.setLocale("de-DE");
      webix.i18n.fullDateFormat = "%d.%m.%Y";

Col:

       id:"created_at", header:["Erstellt am", { content:"dateRangeFilter", inputConfig:    {format:webix.i18n.fullDateFormat}}], width: 300},

Solved by using the map function