anychart.onDocumentReady(function () {
var chart = anychart.waterfall([166, 43, -79, -46, 84, NaN]);
var series = chart.getSeries(0);
series.fallingFill(["#FEFEFE", "#424242"], 0.5, 0.5, null, 0.8, 0.5, 0.5);
chart.title("Set falling fill as a radial gradient");
chart.container("container");