Hi,
I concluded from your question that you wanted a keyin that works in the key-in dialog in Microstation.
(That is: MDL KEYIN BENTLEY.VIEWATTRIBUTESDIALOG,VAD VIEWATTRIBUTESDIALOG SETATTRIBUTE 0 Fill True)
You can even wrap this into VBA like CadInputQueue.SendKeyin "MDL KEYIN BENTLEY.VIEWATTRIBUTESDIALOG,VAD VIEWATTRIBUTESDIALOG SETATTRIBUTE 0 Fill True")
But indeed, the API Function Jon mentioned is better coding style and works fine for me too. I even doubt that it is a problem of the Microstation version you use. So you should try again and implement Jons sample and tell us if it works for you .
Regards, Stefan.