The ; will work with the 1.0 version. The 1.0 version is using indexOf("boundary=") to get the boundary part from the content type. So it will work whatever independent of the separator you use. The 1.1.1 version is using a parser which ';' as separator. It is filling up a map with found properties. When using a ',' instead of a ';' the property with name "boundary" is not found (it will contain a property with name "multipart/form-data, boundary" instead ;-)). I filed a jira issue for this: http://jira.jboss.com/jira/browse/JBPM-698 greetz, Olivier. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3958694#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...