Generate attributes that use the IDENTITY property (4270299)

I want TDM to generate my table create scripts with this type of  IDENTITY attribute. The available datatypes do list Unique-Identifier but I cannot find a way to generate attributes that use the IDENTITY property. Is there a way to do this?

User  can define Identities on tab advanced of the Attribute dialog:

1. Open the model for MS SQL 2005

2. Edit  the attribute | on tab Attribute select "Integer" from the datatype combo box

3. Click the Advanced tab |  check the Identity check box, define identity seed (set it to 1) and identity increment (set it to 1)