anychart.onDocumentReady(function () {
var stage = anychart.graphics.create('container');
var pattern = stage.pattern(new anychart.graphics.math.Rect(0, 0, 20, 20));
pattern.diamond(10, 10, 6).stroke('#ffffff');
var chart = anychart.area();
var series = chart.stepArea([
{x: 'January', value: 125},
{x: 'February', value: 132},
{x: 'March', value: 141},
{x: 'April', value: 158},
series.hatchFill(pattern);
chart.title('Set hatch fill as a pattern');