How do you create a custom toolbar with a ComboBox that will be avaliable
when a chart is active?

I'd like to have a TOOLBAR where a ComboBox (or ListBox) is used to select a
variable. This would then change the source data for the chart. I've got
the code to change the chart, I just can't get a ComboBox in a Toolbar to
work properly when a chart is active.

Tx,
Randall