chart loosing selection or selected element

Hi,

i have a dashboard which has the following events.

refresh DB using a button:

ds1.loadDatasource();

ds2.loadDatasource();

Application.setvariablevalue(v1,x1);

Application.setvariablevalue(v2,x2);

i have the following code in my chart (column). basically clicking on the chart refreshes another chart.

Application.setvariableValue(country,chart_country.getselectedvalue(country));

the moment i do the above operation, the selected element in the chart vanishes. although the selection is passed and the chart updates.

has anyone faced this situation. can i overcome this problem by adjusting code? Please give me your inputs.

environment: SAP HANA

                        design studio 1.4

Thanks,

karthik