Chart filters are not giving desired results

Hello Experts,

I created application in which I have one dropdown (site) and two charts

1. Column chart
2. Bar chart

When i select my site in drop down, chart1 will displaying 4 columns by category sales.

When I click on any 1 bar, chart2 should display top 5 articles in bar chart.

On chart1 properties I have written the following code but my chart 2 is displaying values for all categories.

var filter = CHART_1.getSelectedMember("0PLANT");

DS_2.setFilter("0PLANT", filter);

DS_2.setFilter("0RPA_WGH3",CHART_2.getSelectedMember("0RPA_WGH3"));

Chart 2

I selected site 71762 in drop down, So chart 1 displayed data for 71762, Then I click on First Bar (ie GP G), but my chart 2 is displaying all the categories (Seafood, produce, meat and grocery). Can someone please help me where I am going wrong.

I searched in SDN and also in Google by typing "Filter in chart SAP Design Studio", "Chart on Click in sap design studio", "Filters in Chart in sap design studio" and more but couldn't find desired information. Even i didnt find what CSS statement to be written for filter.

Thanks

Shetty