Calling ValueType.FILE.createValue(someFile, null) fails with a NullPointerException. Should throw a meaningful exception instead (e.g. can't create a file without file name).

Related forum posts:

• https://groups.google.com/forum/#!topic/camunda-bpm-users/llYPOUryqdI
• https://forum.camunda.org/t/multiple-file-uploads-in-the-embedded-form/531