[5e OGL] How to reference Global Damage Modifiers from an ability?

We can trigger repeating attacks like this, for instance: %{selected|repeating_attack_$0_attack} Is there a way to do the same for a Global Damage Modifier? Specifically trying to make one button that triggers Main Hand Weapon, Off-Hand Weapon, and Sneak Attack Damage (just once).

The Global Damage Modifier is an attribute, or a field which contains a value. So far as I know, there is no character sheet Ability (macro) assigned to it. Although it's value can be changed programatically with a script such as ChatSetAttr, there is a long-standing bug that keeps an API change from being recognized by the sheet. Believe me, I've tried: Workaround for Global Damage Bonus not working with ChatSetAttr and Sheetworkers on Roll20 sheet

Thank you!