Is this on the Hero Attribute tile? It’s somewhat unique in that it lets you configure which styles are applied based on different conditions – this is particularly useful for custom attributes or numeric attributes where there could be a wide range of values you might want to match.
Single Style
If you want a single style to always be used, you can enter a comparison that will always match like switch != <blank>. Since the switch should always be on or off, that means a check for it not being blank should always match:
Two Different Styles
For a ‘normal’ switch configuration where you wanted two different states, you could do something like switch == on and switch == off for the two states:

