This link was given as an example for almost exactly the same question except I want a “selected” button to deselect when any other is clicked.
In any other language I would loop “disable” all the buttons by changing the colour to green and then “enable” by turning red the button that was pressed. In fact I wouild only have one set of the 7 buttons. For Bubble I decided to have two groups and created and action to HIDe btnMON and show BtnMONSel etc - when they are exactly on top of each other it doesn’t work , but if i seeperate them it does , but that still leves deselecting the previous enabled “RED” button without 2 hoursof mundane clicking. Is there a better way. I feel like the Daleks who were going to take over the universe then discovered stairs.