[Seaside] Not able to upload [a Seaside.WAFile] through onClick

[dirk newbold]

Hi All,

I have been trying to upload a picture through the onClick callback and
where I would usually use:

 html form
  multipart;
  with: [
   html fileUpload callback: [:f | file := f].
   html submitButton text: 'Load'].

I have been trying the following as it worked for all the other form
elements i.e. input, select etc:

 html form
  multipart;
  id: 'fid';
  with: [
   html fileUpload callback: [ :f | file:= f ].
   html submitButton
     onClick: (html updater
       id: 'pictureHolder';
       triggerForm: 'fid';
       callback: [ :r | self renderPicture: r ];
       return: false);
   text: 'Save' ]

But instead of returning  "a Seaside.WAFile" it is returning the directory
path.
Any ideas?

Cheers,

Dirk
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