"Hi Alvin, It isn't necessary to create a  trigger with the Triggers panel to create the effect.  Use the States tab (to the right of the..."

"Thank you again - that should have been obvious. I have not worked with the States tab before. I tried to replicate your results with ano..."

"Thank you , Michael, for taking the time to take a look at this. Your example displays exactly the behavior I was hoping to see. I'm afra..."