For AC20 (not sure which version you are using), you can use "Identification and Property Label 20" that allows you to select Frame Shape, disable Leader Line, etc. Being a label, it will show/hide with the wall associated.
Or, if you are one of the brave souls, I have a custom made label for you to try. It's still in beta though.
Hi palawat
This brave soul will give your label a try and report any errors back. From a quick read it looks like it may work as a keynote object as well. Thank you for your generosity.