ACCOUNT_MESSAGE_HEADERS_URL = "http://www.chaoticunited.com/wow/accountmessaging/getMessageHeaders.xml";

ACCOUNT_MESSAGE_HEADERS_URL?accountName=$accountname&sessionKeyHash=$keyhash

http://www.chaoticunited.com/wow/accountmessaging/getMessageHeaders.xml?accountName=HARRY&sessionKeyHash=10803082080280281

Result ->

<headers>
<header_entry id="0" priority="0" opened="0">
<subject>Message 1</subject>
</header_entry>
<header_entry id="1" priority="0" opened="0">
<subject>Message 2</subject>
</header_entry>
<header_entry id="2" priority="0" opened="0">
<subject>Message 3</subject>
</header_entry>
</headers>

The data is fine. So why is it not working?