Bubble Card Horizontal Bubble Stack Conditionally Change Bubble Icon

Apologies in advance if this topic has been discussed but I have yet to come across anything in regards to the task I’m wanting to complete:

Is there a way to conditionally change the icon of a horizontal stack button? Following Clooos example of conditionally changing an icon/sub-button icon i’m still not able to make it work. I’ve also used simple ‘if is_states’ conditions that i’ve used in the past for other card’s colors/icons, i.e. ‘1_icon’, to no avail. Any help in the right direction would be helpful! TYIA!