Point of confusion - Custom Properties

[Jim Ault]

I am trying to grasp how the setProp and getProp handers will work and am
stuck on the following concept.

Given: that executing the following lines will 'attempt' to change the
values of custom properties and send a message to do so ...
on opencard
  set the dontShowError of this stack to "true"
  set the dontShowIcons of this stack to "true"
  set the dontShowAnimation of this stack to "true"
end opencard

---how can another handler be triggered while this one is running?

setProp dontShowError valToSet
  if valToSet is not  in "true,false" then
    --do nothing, no change
  else
    pass dontShowError
  end if
end dontShowError

setProp dontShowIcons valToSet
  if valToSet is not  in "true,false" then
    --do nothing, no change
  else
    pass dontShowIcons
  end if
end dontShowIcons 

setProp dontShowAnimation valToSet
  if valToSet is not  in "true,false" then
    --do nothing, no change
  else
    pass dontShowAnimation
  end if
end dontShowAnimation
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Thanks, 

Jim Ault
Las Vegas