Why does a regular expression unsing in a validator returns different behavior in web and eqlipse client?

Hi to all,

hope that somebody can help me.

I have the problem, that in the eclipse client a regular expression works fine as validator but in the web client not.

I have defined a very simple regular expression validator for a small string attribute. It should only check if the string is a lastname (ex. Mustermann) without leading or ending whitespaces

I have used the follwing simple reg exp: [a-zA-Z]+

In the test section of the validator it works fine.
When creating a WI with this attribute in eqlipse client: It works fine
When creating a WI with this attribute in web client: It don't work :-(

Any Idea?

Im working on 4.0.6

Thanks in advance

Nicole