Message box mild oddity

[Colin Holgate]

Try this:

on mouseUp
    put space & the selectedLine of me into fld "message field" of  
stack "message box"
    put "select before text of fld" && quote & "message field" & quote  
&& "of stack" && quote & "message box" & quote into whattodo
    send whattodo to this stack in 30
end mouseUp