Trying. Trying my luck with Leader Brawl

I have a Leader Brawl MISB. If anyone is interested, I'm selling him for $150 or best offer, plus shipping. Considering how rare this figure is, $150 is a steal! You're better off getting from me instead of those sumbitch scalpers who will probably get this rare item bid to the high heavens on E-bay, so why not just save yourself the money and aggravation? If BB74 got bid up to $199, imagine what Brawl's ceiling could be!
Okay okay just kidding
. I do have a Leader Brawl, and he is MISB. However what I can't figure out is the Try Me button. I can't get it to work, so I don't know what I'm supposed to try and see. My worry is that something is broken, in which case my MISB Leader Brawl really isn't so M, although still ISB.
Can anyone advise me how to get this to work? That way I'd be assured that he can stay MISB without taking him out to check for sure. Of course I'm probably thinking of excuses to open him up too. Save me from myself!
Okay okay just kidding

Can anyone advise me how to get this to work? That way I'd be assured that he can stay MISB without taking him out to check for sure. Of course I'm probably thinking of excuses to open him up too. Save me from myself!