Hi Thiago,

That's interesting. Perhaps the documentation wants updating. It says:
"Note the importance of return this;. A void event handler method, or
one that returns null, will result in the FileUploadException being
reported to the user as an uncaught runtime exception."

https://tapestry.apache.org/uploading-files.html

Perhaps if I change it to void it may keep my values, i'll give it a try.

Thanks,
Steve

On 9 June 2015 at 18:25, Thiago H de Paula Figueiredo
<thiag...@gmail.com> wrote:
> On Tue, 09 Jun 2015 14:05:49 -0300, Stephen Nutbrown <steves...@gmail.com>
> wrote:
>
>> Hi,
>
>
> Hi!
>
>> Object onUploadException(FileUploadException ex) {
>>     message = "The file is too large, please resize it to be less than
>> 500kb.";
>>     return this;
>> }
>
>
> Never return "this" in an event handler unless you want to force a
> redirection. Return null or void.
>
> --
> Thiago H. de Paula Figueiredo
> Tapestry, Java and Hibernate consultant and developer
> http://machina.com.br
>
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