add new datatypes -> error occured

[jade]

hi all,

i am doing round-trip-engineering with a script language which is very similar to C. So I chose C as programming language.
The problem is there are some datatypes which don't exist in C, so I need to define new datatypes.
so, i go to Settings-> Code Datatypes, then

1) choose product name: C and
2) add the new datatype, e.g. Datatype: DB and Common Type: String.

As I do reverse engineering, an error occured which tells me : Unexpected symbol: DB .

What do I need to change as well?

Thanks a lot in advanced!

Jade