Sugarcube: Append text to rpg system combat log

I've been using this really good combat system for an rpg that I'm working on. In the log passage here, once you click on a different action, the previous text disappears and is replaced.

Is there a way to modify this system to retain all the text from all the actions the player uses? (New text resulting from previous actions simply get appended to the log)

This system uses Harlowe, but I was hoping to see if the modification I want is possible in Sugarcube (already converted the current system to Sugarcube on my end).

Thank you!