Can't get particles to spawn with redstone.

Hello.  So, I'm certain there's an easy answer for this somewhere, but I have yet to find it.  I am currently making a block (a trashbag) which I want to emit particles (that look like gnats/flies) while the trashbag is powered by redstone.  I must be doing something very wrong here, as when I put my procedure on the Redstone On trigger, nothing happens.  I'm also completely new to using the forum and don't know how to post images on this, but I can describe the block's properties  

The trashbag does act as a storage block, and has an inventory.

The trashbag also uses DUNSWE rotation and uses a custom block model.  

Any help at all with this would be very much appreciated.  Thank you.