route pattern and calling party transformation pattern

[elite2010]

Hi,

I have routing pattern 9.00! and there is a calling party transform mask 

I  have two dn 2001 and 2002

Now I need different calling party transform mask for 2001 and 2002 

eg: 2001 ----> +1234xxxx

eg: 2002-----> +12340000

How can I do that ? 

Thanks

[Dennis Mink]

Have you considered setting the external phone number mask (on the actual extension) instead?

[elite2010]

If I use external number mask , it will mask regardless of any pattern
Here is my international pattern 9.00!
And if for my national route pattern also it will mask .
Correct me if I am wrong ?

My requirement is only when it dials 9.00! Pattern I need to use the transformation mask

Thanks