Synching data on dashboard of line items

Options

Hi

In 1 module I am having 2 line items 1 contains parent data and the other contains child data I want to show in the dashboard Hierarchical combination for those 2 line items. like if I click on India then it will show states in India and if I click on Canada then it will show states in Canada
Please help me how I can sync this data?

Thanks

Answers