I need help with stacked graph using Anychart function.

This is my code to display the graph

function StackedGraph() {
    anychart.onDocumentReady(function () {
        var getData = [];
        $.ajax({
            type: "POST",
            url: "", // `retrieve data from another code that will get data from stored procedure using ssms`
            async: false,
            dataType: 'json',
            success: function (data) {
                $("#containerMaterial").html('');
                $.each(data, function (index, item) {
                    var xValue = item.x; 
                    var yValue = item.value; 
                    //getData.push({"x": xValue, "value": yValue});
                    getData.push({"y": xValue, "value": yValue}); // sec values
                });

              ` // code ...`

                // Draw the chart
                chart3.draw();
            },

I wanted to display the stacked graph where it will get data from stored procedure, [“Place Name”, SumA, SumB]. i got to display only one of the values. however the values for the second one did not appeared.