How to change Tab Navigator Icon?

Hello!
I would like to change the Tab Navigator Icon of the “Cart” to show the user the amount of products he has selected, however, I am not able to use the Tab Navigator Icon block to do this. Can someone help me?

I want to made something like this:

Hello,

You have an error in the property name, but I’m afraid even the correct property won’t allow you to change the icon

https://x.thunkable.com/projects/5edd34f6694a416fff9ee1bf/project/properties/designer/

Hi, @actech!
I changed the property but it didn’t work :frowning: