i can't add row to table using restful api.

i can't add row to table using restful api.

I want to add data to my table using javascript and zoho's restful db interface.But I always
got error like this after invoking,

<?xml version="1.0" encoding="UTF-8"?>
<response uri="/api/blueocci/voca_junkie/word_list" action="ADDROW">
<error>
<code>8016</code>
<message>You need to have atleast one column for INSERT or UPDATE action</message>
</error>
</response>

Anyone can help me figure this out?