Unable to find the upload named 'MyUpload'
    invoked from within
"::rivet::upload save MyUpload /tmp/uploadfiles/file1"
    (in namespace eval "::request" script line 3)
    invoked from within
"namespace eval ::request $script"
    ("::try" body line 12)

OUTPUT BUFFER:

puts -nonewline "" ::rivet::upload save MyUpload /tmp/uploadfiles/file1 puts "Saved file [::rivet::upload filename MyUpload] \ ([::rivet::upload size MyUpload] bytes) to server" puts -nonewline " "