I have looked, at and hoped that I could use, this sample map:
and substitute some of the data I have access to.
When I do substitute mapservices that we have here, the sample map will toggle on and off the entire mapservice and not the specific layer I was hoping it would.
Here is the mapservice I am trying to access with this code:
I would love to hear from someone about a solution. Nothing seems as straight forward as it looks...