How to use automations in an unliked NPC bar

Hey! I'm doing a big raid to my players where they'll find a layer of goblins and bugbears, with multiple monsters of the same type. I got that to make individual changes to the HP of each monster I should unlink the hp on the token. But this doesn't allow me to do make a adtion or subtraction in the bar any longer. For example, the bugbear has 27 hp and my fighter deals 9 damage, when the bar is linked i can just type 27-9 and it gives me the current health of the monster (18, in this case), with the bar unlinked I'd have to type the result because when I type 27-9 it will show 27-9 not 18. How can I solve this?  Thanks

Even with the bar unlinked, if there is a value in the Bar 1 current field and you type a ‘-9’ it should subtract from the value. 

I see, so it works unlinked typing - DAMAGE and not CURRENT - DAMAGE  ? With linked bars the second way works just fine. Interesting.  Thanks, 

That’s probably because the character sheet’s sheetworker script is doing the arithmetic for you and using the result. The unlinked token doesn’t have a sheetworker any more, so only the supported “–NUMBER” & “+NUMBER” are working.