Create and application for the two visuals, Control Visual and Target
Visual.
Click New App, and name it
Control-Target Application.
Select the Visuals tab.
Click to expand the US State Populations Over Time grouping, and
select Control Visual.
Click to expand the US County Population grouping, and select
Target Visual.
To enable parameter passing between the two visuals (in this case the parameter is
state), left-click on one of the states in the Control Visual
until the control menu appears.
