How can I change the status of the fileupload UI from disable to enable?

Hi, experts,
The Version of my Netweaver studio is 7.0.11.
I create a view with fileupload UI element in WebDynpro for Java application, but the fileupload UI element is disabled so that I don't select file when I click the button in the fileupload UI element after I run the application.
How can I change the status of the fileupload UI element from disable to enable?
Best regards,
tao

Hi
look at this thread [HI Masters , I need information for file upload program in web dynpro java|HI Masters , I need information for file upload program in web dynpro java]
and check if u bind each file upload element to binary property in the context

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How can I change the status of the fileupload UI from disable to enable?

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