I have defined an input file in dynaform for file upload. In order to allow users re-upload the file when they clicked on wrong files, I set an iteration to the task. When the task is re-iterated, the filename and filename_label of the upload file variable are set to "". I could allow user to re-upload their files. However, I cannot clear the old file name of the previous selected file appeared in the file selection field.
Grateful if I can be advised how to clear the field value.
I'm using Bitnami 3.2.1 on Linux version.