Building a sampler, but problems arise...

So I'm building a sampler.  Nothing fancy, just bare bones.  I've starting going through the Max tutorials and I've whipped something up.  What I needed was a sampler that had a 'toggle' function.  Send a note to start the sample, send another to stop it.
 
My dream is to put this device inside the Drum Rack, so you can toggle loops from within it.  This is a specific need of mine for my new setup.  The regular sampler didn't have a 'toggle' feature that would work for me.
 
Alas!  I've whipped the little guy up.  Works dandy, as much as I can hope.  I can toggle the function for Looping, and I can toggle the function for Toggle, and I can trigger the sample with any MIDI note sent to the instrument (another particularity of mine).  
 
Here's where it all goes wrong...
Any time I use multiple instances of this device- it winds up using the same sample for ALL instances.  So if I have four instances of my little sampler, and I drop four unique samples on each one- they will all play the most recently assigned sample.  This applies within the Drum Rack instrument, and outside of it as well.
 
I have some other issues with my project, but this one is the biggest deal.  I'm definitely new to Max and M4L, so I've got alot to learn- but I do have programming experience.  Perhaps it's an issue with variable names, and loading the sample info?  Just an idea.
 
Does anyone know why this would be happening?  Any help is greatly, greatly appreciated! 
 
 
Also, I couldnt upload my device.  But, it is based off of this device I found online- which has the same bug:
http://www.maxforlive.com/library/device.php?id=185
Perhaps that will help in the debugging process.