How can you have boolean -datatype in VP-uml?

Question

My ERD is

alt text http://files.getdropbox.com/u/175564/db/db-8.png

I use at the moment integer(2) to signal that the datatype is boolean because the program does not allow me to type boolean to the datatype -field.

How can you have boolean as a datatype in the program VP-uml?

[edit]

The problem still persists.

I see the following in my VP-uml:

alt text http://files.getdropbox.com/u/175564/vp-uml-datatype-bug-boolean.png

Answer 1

http://www.visual-paradigm.com/highlight/highlightcustomizabledatatypes.jsp