File drop question

[UDI]

I made an application with MacOS 9. It support drag&drop on desktop.
I put the wild-card'****' in fileType so that it accepted all kind files.
And test script here..

on appleEvent theClass,theID
  request appleEvent data
  answer theClass & theID &return& it
end appleEvent

When the application doesn't start -
 when I drop a file on icon, the application starts and dialog appears.

But when the application starts already -
 when I drop a file on icon, the application activate and ...no dialog.

I'm working on MacOS9 and Rev2.1.2. What do I make a mistake in?


UDI
eudio at chabashira.co.jp
http://homepage.mac.com/udi/