setReturnKey("done") not working for newTextBox

Hi there. I implemented setReturnKey (“done”) with newTextField and it works fine (replacing the enter function with a “done” function to exit a text field). But when I change the newTextField to newTextBox, it doesn’t work.

It should work accoriding to the info here: https://forums.coronalabs.com/index.php?app=forums&module=post&section=post&do=new_post&f=600

Anyone know what’s going on? I am testing an apk on Android 5.1. I need a TextBox instead of a TextField for this app.

Thanks.