Is it really or are you looking at what the displayed html is giving you? You probably just forgot the quotes there. The following

<INPUT Name='anyname' VALUE=abc def>
[download]

is creating a new tag def and setting VALUE to abc only

print "<INPUT Name=\"anyname\" VALUE=\"$v\">";
[download]

should fix it.

--
A much wittier reply came to mind immediately after I clicked the "Submit" button.