modify ChoiceItem at runtime

[Elmar Werling]

Hello,

I would like to modify the choices displayed by ChoiceItem at runtime,
so that the items of choice_2 depends on the selected item of choice_1

For example having the following data structure

d = {'one': ['Item1', 'Item1', 'Item2', 'Item2'],
'two': ['item2a', 'item1b', 'item2a', 'item2b'])

only item2a and item2b should be displayed in choice_2, if in choice_1
Item2 was selected.

Any hint would be wellcome.

Thanks
Elmar