how to show all bubbles with same x,y and z values in fusionchart bubble chart - fusioncharts

Question

In bubble chart of fusionchart have no option to show all bubbles under one perticular bubble displaying on chart that have same score and size. But i need to show all bubbles that have same score and size.The other bubbles are hiding under the first bubble.
http://jsfiddle.net/58sYu/1276
FusionCharts.ready(function () {
var conversionChart = new FusionCharts({
type: 'bubble',
renderAt: 'chart-container',
width: '600',
height: '300',
dataFormat: 'json',
dataSource: {
"chart": {
"caption": "Sales Analysis of Shoe Brands",
"subcaption": "Last Quarter",
"xAxisMinValue": "0",
"xAxisMaxValue": "100",
"yAxisMinValue": "0",
"yAxisMaxValue": "30000",
"plotFillAlpha": "70",
"plotFillHoverColor": "#6baa01",
"showPlotBorder": "0",
"xAxisName": "Average Price",
"yAxisName": "Units Sold",
"numDivlines": "2",
"showValues":"1",
"showTrendlineLabels": "0",
"plotTooltext": "$name : Profit Contribution - $zvalue%",
"drawQuadrant" : "1",
"quadrantLineAlpha" : "80",
"quadrantLineThickness" : "3",
"quadrantXVal" : "50",
"quadrantYVal": "15000",
//Quadrant Labels
"quadrantLabelTL": "Low Price / High Sale",
"quadrantLabelTR": "High Price / High Sale",
"quadrantLabelBL": "Low Price / Low Sale",
"quadrantLabelBR": "High Price / Low Sale",
//Cosmetics
"baseFontColor" : "#333333",
"baseFont" : "Helvetica Neue,Arial",
"captionFontSize" : "14",
"subcaptionFontSize" : "14",
"subcaptionFontBold" : "0",
"showBorder" : "0",
"bgColor" : "#ffffff",
"showShadow" : "0",
"canvasBgColor" : "#ffffff",
"canvasBorderAlpha" : "0",
"divlineAlpha" : "100",
"divlineColor" : "#999999",
"divlineThickness" : "1",
"divLineIsDashed" : "1",
"divLineDashLen" : "1",
"divLineGapLen" : "1",
"use3dlighting" : "0",
"showplotborder" : "0",
"showYAxisLine" : "1",
"yAxisLineThickness" : "1",
"yAxisLineColor" : "#999999",
"showXAxisLine" : "1",
"xAxisLineThickness" : "1",
"xAxisLineColor" : "#999999",
"showAlternateHGridColor" : "0",
"showAlternateVGridColor" : "0"
},
"categories": [
{
"category": [
{
"label": "$0",
"x": "0"
},
{
"label": "$20",
"x": "20",
"showverticalline": "1"
},
{
"label": "$40",
"x": "40",
"showverticalline": "1"
},
{
"label": "$60",
"x": "60",
"showverticalline": "1"
},
{
"label": "$80",
"x": "80",
"showverticalline": "1"
}, {
"label": "$100",
"x": "100",
"showverticalline": "1"
}
]
}
],
"dataset": [
{
"color":"#00aee4",
"data": [
{
"x": "80",
"y": "15000",
"z": "24",
"name": "Nike"
},
{
"x": "80",
"y": "15000",
"z": "24",
"name": "Adidas"
},
{
"x": "80",
"y": "15000",
"z": "24",
"name": "Puma"
},
{
"x": "65",
"y": "10500",
"z": "8",
"name": "Fila"
},
{
"x": "43",
"y": "8750",
"z": "5",
"name": "Lotto"
},
{
"x": "32",
"y": "22000",
"z": "10",
"name": "Reebok"
},
{
"x": "44",
"y": "13000",
"z": "9",
"name": "Woodland"
}
]
}
],
"trendlines": [
{
"line": [
{
"startValue": "20000",
"endValue": "30000",
"isTrendZone": "1",
"color": "#aaaaaa",
"alpha": "14"
},
{
"startValue": "10000",
"endValue": "20000",
"isTrendZone": "1",
"color": "#aaaaaa",
"alpha": "7"
}
]
}
],
"vTrendlines": [
{
"line": [
{
"startValue": "44",
"isTrendZone": "0",
"color": "#0066cc",
"thickness" : "1",
"dashed" : "1",
"displayValue": "Gross Avg."
}
]
}
]
}
});
conversionChart.render();
});
This the test data edited in fiddle..under first three datas have same size and values so you can see how bubbles are displaying..
Please help