Hi Nova S., Seeing as you mention an infinite loop, I assume you are taking about the Monster Hit Dice API script, not an Addon. (Addons are content added to an existing game, like cards or short adventures). If you are using the D&D 5e by Roll20 sheet, these settings should work on your game (set them on the API page after selecting the script.). You may need to change the bar definition, depending on where you display HP. The script itself should be fine, I am using on my campaign currently. If it continues to give you issues, you may need to alter the settings for a different sheet, or you may need to temporarily disable other scripts to track down a conflict.
