Yes, you can definitely accomplish this using icons as the radio buttons, instead of the radio button element itself. Here’s an example with 6 topics in the forum app (though it can be any number you need of course):
This is similar to the forum’s multiselect example using a custom state that holds a List of Topics that the User has selected from a repeating group. To have the app display icons which function similar to the radio button element, we just need to add a radio icon within the repeating group’s cell itself - which reflects if the Current cell’s Topics is in the custom state List or not. I used Google Material Icons, but I think it’s also available with the Ionic Icon plugin. For example, the radio button icon will look like this by default (unselected):
But when the List contains the Current Cell’s Topic, then the conditional formatting changes the icon itself to reflect that it is currently selected:
In this example the custom state is on the page itself (radio_multiselect). Bubble allows for custom states to be created/set on any element on the current page - and the page itself is considered an element. The custom state I initially created is called “Selected Topics”, Type: Topic, List: Yes (since we need to enable the User to select more than one Topic, the value of our state will always be a List of Topics).
If I can clarify how to set this up in your app or if anything looks confusing in the example, please feel free to let me know and I can definitely explain step-by-step.