Using L5R Advanced Sheet with Alterbars 2.0 API, which is intended to automate the deduction of HP from tokens as attacks are made. Relevant macro is as follows: --alterbar|_target|@{target||token_id} _bar|3 _amount|[^Dmg] _show|GM Where "Dmg" is defined elsewhere in the sheet. The trouble is the Dmg variable is outputting as a positive number (since it's the sum of the damage dice), which is telling the API to add HP, healing the target rather than dealing damage. All I need to do is turn the Dmg variable negative, but I can't figure out how to do that in the macro syntax. I tried the obvious stuff, like putting a negative sign in front of it, but that just broke the macro. Any advice would be greatly appreciated.