how could i access $CGI::DISABLE_UPLOAD ?

#!/usr/bin/perl -w
use CGI;
print "CGI::DISABLE_UPLOADS: $CGI::DISABLE_UPLOADS\n";
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gives:
Name "CGI::DISABLE_UPLOAD" used only once: possible typo at cgi-bin/te.pl line 3.
Use of uninitialized value in concatenation (.) at cgi-bin/te.pl line 3.
CGI::DISABLE_UPLOAD:
thx maksl

Update:
the other name variable gives CGI::POST_MAX: -1, perhaps my version of CGI can't disable upload?

Update2:
added plural to above, thx jasonk .. this results in CGI::DISABLE_UPLOADS: 0