Action builder - make object visible not working.

[LegendGraphics]

When using LiveCycle 9 action builder, I can make objects invisible (button click) with no problem.  But then when I try action builder  to make the same objects visible with another button click  action, it doesn't work. I could use some ideas what might be wrong.

Thanks

[LegendGraphics]

More information.

1. When I designate an object "invisible" during composing I cannot get it to then show programatically with a button click.

this.resolveNode("countryCodeDropdown").presence = "visible";  (Doesn't work)

2. However, if I render that object "invisible" programatically, then I can get it to show programatically.

This code in a "change" script makes the same object invisible.

this.resolveNode("countryCodeDropdown").presence = "invisible";

and now, this button-click code works. (Same code as above)

this.resolveNode("countryCodeDropdown").presence = "visible";

What is different?

I've tried setting the object visible in composing and making it invisible when the form loads, but then it will not unhide.

Thanks!