"Preview screen" button

[John R. Brauer]

Hello all,

I am trying to set up a button as a preview screen in the corner of a 
window, so that when the cursor passes over an area of a map in the 
window, a picture of the item that is represented in that area of the 
map appears on the "preview screen" button. I have made an invisible 
button that covers the area of the map that I am trying to show, and 
have scripted it as follows:

on mouseenter
   set the icon of button "PreviewButton" to image id 1392
   set showIcon of button "PreviewButton" to true
end mouseenter

When I try to do this, it not only does not work, but the entire Rev 
environment crashes immediately. Can anyone replicate this? And more 
importantly, can anyone tell me what I am doing wrong?

Ideally, I would like this button in the corner of the window to show a 
different image for whatever area of the map the cursor enters (the 
program is for keeping track of a garden and its current plants).

Thank you.


Sincerely,

John R. Brauer