Filter pivot table on aggregate columns

Webix JS
1

Hi,

I have a pivot table with aggregate values in it :

  var fields = [
        { id: "a", value: "A", type: "text"},
        { id: "b", value: "B", type: "text"},
        { id: "c", value: "C", type: "text"},
        { id: "d", value: "D", type: "text"},
        { id: "e", value: "E", type: "text"},
        { id: "f", value: "F", type: "text"},
        { id: "g", value: "G", type: "text"},
        { id: "x", value: "X", type: "text"},
        { id: "y", value: "Y", type: "text"},
        { id: "z", value: "Z", type: "text"},
  ];

 webix.ui({
    container: "pivot-container",
    rows: [
        {
            view: "pivot",
            id: "pivot",
            url: checkedDataUrl,
            fields: fields,
            structure: {
                rows: ["x", "y", "z"],
                columns: [],
                values: [
                    { name: "a", operation: ["countunique"], format: webix.Number.numToStr({ decimalDelimiter: ",", decimalSize: 0 }) },
                    { name: "b", operation: ["sum"], format: webix.Number.numToStr({ decimalDelimiter: ",", decimalSize: 2, priceTemplate: "€ {obj}" }) },
                    { name: "c", operation: ["sum"] , format: webix.Number.numToStr({ decimalDelimiter: ",", decimalSize: 0 }) },
                    { name: "d", operation: ["sum"] , format: webix.Number.numToStr({ decimalDelimiter: ",", decimalSize: 0 }) },
                    { name: "e", operation: ["sum"], format: webix.Number.numToStr({ decimalDelimiter: ",", decimalSize: 0 }) },
                    { name: ["f", "g"], operation: ["ratiopercent"] , format: webix.Number.numToStr({ decimalDelimiter: ",", decimalSize: 2, priceTemplate: "{obj} %" }) },
                ],
                filters: [{ name: "b" }, { name: "c" }],
            }
        ]
})

Is there a way for the filters to operate on the aggregate values instead of on the raw data fields?

Kind regards,

Nick