Follow up: Output type

Hello again, a deadline came up, so I only just got to that '3 digits' 
graphic again from my previous post. And I'm still stuck. Here's what I've 
tried:
- I type 3 digits, adjust size and change to Pantone color fill.
- I add perspective and drop some shadow.
- When I try to use the Transparency tool, I get a message about spot 
colors.

When I Save the graphic as .CMX-5 or .CDR and import it into Ventura, I get 
a gray square. The shadow and transparency are probably messing things up. 
That is, I have to save it in another format. But which one? I need is a 
Transparant graphic.
Can somebody help me out here?

Thanks, Ab