Issue with Dynamic Choice in a Search Box

Hi,
I created a Search Box wich is supposed to indicate all users name.

I’ve selected Dynamic Choice, User as type, Search for Users as Choice source (no constraint for testing), and Current Option’s name as caption.

But it only bind to the current user, and doesnt display any user.

Where is the issue ?

Thank you

Check whether you have a privacy rule for User datatype that prevents any user to find users in a search other than himself.

Great, that was the point !
Thanks a lot !