Again, this isn't the forum to discuss technique and/or variations for an effect.
If you have the effect, go to the private forums for the trick and...well, you know the rest.
Generally speaking, this effects works best with real money.
Yes, as in the video, changing $1.00 bills to $100.00 bills is quite impressive, but it does tie up a 'fair' amount of cash for your 'packet'.
That being said, you can change 'ones' to any other amount (5's, 10's, 20's etc.) to make it easier on your wallet.
Or, you could change 'paper' to money for a nice effect.
And, yes, you could even use 'play' money...but you lose the 'aha' moment that real cash provides, in my opinion.
Candidly, if you have to use play money, take a pass on this since you readily admit that 'you don't do this kind of magic'.
There are many other great effects to spend your money on.
In closing, this is the 'best of the bunch' regarding money changes.
Best wishes...
Oh, upon reflection, you get a pass for this question ;-)
I don't believe that there is access to this in the private forums. It's one of the few that aren't made accessible there.