How to multiple select item?

Hi experts,
If I want select all items in multiple select items as below, how should I do? Thanks

Use select multiple item activitiy @Matt_Lin

Thanks.
I can use multiple item activity to select specified items, but I don’t know how to select all items every time.
Because items be changed every time.

@Matt_Lin

Pass a list of Strings which are dynamically populated to Select Multiple Items activity as below

Hope this may help you

Thanks

Thanks for your suggestion.
Finally I found two ways to solve my problem.

  1. Use Get Attribute Activity then convert to string populated to Select Multiple Items activity.
  2. Mouse click to first item then Send HotKey Shift+END

Both of these methods can select all items of object.