Is it possible to check if the touchscreen keyboard has been closed?

Hey guys,

I'm currently working on an Android game in Unity, where at the end the player can enter his name into a scoreboard. I open the keyboard with the script Touchscreenkeyboard.Open (). My only problem is that I don't know how to check if the player just clicks on the screen above the keyboard so that it disappears. The only method known to me is wasCanceled, but on my Android device it only reacts when I close the keyboard with the back-onscreen-key.

I hope you know a way to solve my problem.