Jump between picker ui items

Hello friends How to jump between picker ui items in patch editor or with script?
For example, in normal mode, when executing the effect, the first item is selected by default in picker ui
How to do it when performing the effect without selecting picker ui items by the person Automatically select another item, such as the third item?

I think you can set the picker’s selectedIndex property.

picker.selectedIndex = Reactive.val(2)

Or if that doesn’t work, you can reconfigure the picker again. As far as I know this can only be done in script. Here are the docs!