Corona sample code for working with "incentivized" ads

I wonder how I can check for the feedback with “incentivized” video ads in Corona?

I want to let the user decide to watch a video to unlock something in the game when he has completed the video.

Is there some sample code for Corona somewhere? I can’t find anything.

I am actually wondering this myself, as we are considering using Vungle for apps going forward… I’ve read this:

http://docs.coronalabs.com/daily/plugin/vungle/show.html

And it specifies that we can send a username for incentivizing ads, however, doesn’t seem to cover how, once an ad is closed, we can detect that they viewed the ad once they get back to the app.

Did you ever figure out a way to do this?

I am actually wondering this myself, as we are considering using Vungle for apps going forward… I’ve read this:

http://docs.coronalabs.com/daily/plugin/vungle/show.html

And it specifies that we can send a username for incentivizing ads, however, doesn’t seem to cover how, once an ad is closed, we can detect that they viewed the ad once they get back to the app.

Did you ever figure out a way to do this?