Making the "Alter Bar on Token" Script work with the "Temp HP Manager" script

As the title says. Is there any way to get this script to work with with the Temp HP Manager (second one down) from the wiki? The temp HP manager is working, but it doesn't update when Alter Bar changes the HP bar. I know next to nothing about javascript, so I imagine there's an obvious reason why, but is there any way to make this work with my nonexistent coding skills?

It is because changes made by API scripts do not trigger events that are received by event handlers registered with the on('') function. It is possible to fix this, but it requires non-trivial changes to both scripts.