Storyline 1 - click on video to make it grow larger

Hi.  I am using Storyline 1.  I would like to include a video as a small thumbnail to provide the audio for the slide.  I would like to have the user be able to click on the video and enlarge it or click again to reduce its size back to thumbnail all while it is playing.  Is this possible?  How?  I thought maybe change state of, but I can't seem to edit the state of a video.

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