SelectedChunk problems with OS 9

[Dan Soneson]

I have constructed a small keyboard stack with buttons with 
international characters. When entering text into a field in a stack a 
user can call up this "keyboard" stack as a palette. When the user 
clicks on one of these buttons that international character is inserted 
into the field of the toplevel stack at the point of the cursor. The 
user can then continue entering text into the field.

The stack is called from a button script. Here is the relevant portion

on callUpKeyboard

 global gMyStack

  put the name of this stack into gMyStack -- needed for the keyboard 
to set the topstack

-- some code here to configure the buttons for the appropriate language

  palette stack "keyboard"

end callUpKeyboard

Then in the "key" group of the keyboard stack there is this script:

on mouseUp
  global gmyStack
  topLevel stack gMyStack
  put the label of the target into myChar
  put mychar into the selectedChunk
end mouseUp
This works like a charm in OSX, rev 2.01. However, in OS 9, I 
constantly get an error message, indicating it can't find the 
selectedChunk. I am unable to insert the character at the cursor point 
in the field in the main stack. However, I can replace a character in 
the field in the main stack if I actually select it. So, by typing 
horen in the field, selecting the "o" and clicking on my button in the 
keyboard palette that is an o with an umlaut, I can get the umlaut in 
the proper place. But I still need to click in the field to continue 
typing.

Is this a problem with the way Rev works in OS 9? Are my handlers 
problematic?

thanks,
Dan
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