Can not Disable File Upload Field in on Load section

Can not Disable File Upload Field in on Load section

Hi:

I have a File Upload field in a form that I would like to Disable (in order to prevent abuse while this Form's Application is set for "Public" access).

After I insert the Disable command in the Form's onLoad section (both, within the on Add and on Edit sections) ... and then try to Save the script, I get an error response ...

enable/disable fields is not applicable for the file upload field

... can someone at Support provide an exaplanation for this ... either that it is a bug ... or how to prevent users out there from uploading files while the Form is available to anyone and everyone ... I can Hide the field but that would defeat the purpose of the Application.

Gaev