Web Services - The maximum length for a string value is 80.

Hi

Created a (list) page for table 18, with only the No. field on it:

Caption     Type          SubType      SourceExpr
==================================
Customer   Container    ContentArea  
General      Group         Repeater
<No.>        Field                            "No."

I then publish it as a web service.
When doing the .readmultiple(...) in .NET I get: The maximum length for a string value is 80.

I had this before, and it was due to another field not on the listed fields on the page object, that had captionclass set to some stupid calculation to build the caption - I removed the captionclass and it worked.
In this case, there are none of those! Customer."No." is still Code20...

Any ideas?

Thanks