The reason it is putting your label back is because you already had a task scheduled and as only the overlay is being hidden, the activity is still active.

Note that CF.activity().scheduleAfter functions at the Activity Level (because it is a member function of the activity instance), not at the Overlay Level. :-)

If you want to really see what is happening do what I suggested above (quoted below).

If you'd like to see what is really happening, put System.print() statements right before each scheduleAfter call indicating you are scheduling and then a System.print statement right after each function begins execution. I posted a thread a few years back about debugging pronto script where I suggest using try/catch blocks and System.print, etc...

After you use System.print to identify the ordering you have, the doAnimation variable suggestion I made above with examples will solve your issue. ;-)