Change Data source of a Info chart upon drop down selection

Hi Gurus,

I have a dashboard that based on 2 different BEX queries with only difference of

DS_1: GL data of all the Profit Centers

DS_2 : GL allocated to customers.

I have success in changing the Cross tab to DS_2 after selecting Customer Droop Down but my Info Charts are not changing,

Charts and Crosstab are in 2 different tabs.

I have code on Customer Drop down "On Select" as Cross-tab_1.setdatasource(DS_2)

This works well but not for charts.

Any thoughts would be appreciated.

Using Design Studio 1.6 SP1.

Thanks,

Jothi