Adsense for Feed code in external.php. How?

[Black_Widow]

Hello
I'm running vbulletin ver. 3.5 and I'm trying to put adsense code for feed into external.php

<![CDATA[<p><map name="google_ad_map_<$MTEntryDate format="%y%m%d%H%M%S"$>">
<area shape="rect" href="http://imageads.googleadservices.com/pagead/imgclick/<$MTEntryDate format="%y%m%d%H%M%S"$>?pos=0" coords="1,2,367,28"/>
<area shape="rect" href="http://services.google.com/feedback/abg" coords="384,10,453,23"/></map>
<img usemap="#google_ad_map_<$MTEntryDate format="%y%m%d%H%M%S"$>" border="0" src="http://imageads.googleadservices.com/pagead/ads?format=468x30_aff_img&amp;client=CLIENTIDXXX&amp;channel=&amp;output=png&amp;cuid=<$MTEntryDate format="%y%m%d%H%M%S"$>&amp;url=<$MTEntryPermalink encode_url="1" archive_type="Individual"$>"/></p>]]>

Anyone has been able to perform successfully this modification to external.php?

I've tried changing RSS2 code in external in this way:

	case 'RSS2':
					echo "\r\n\t<item><![CDATA[<p><map name=\"google_ad_map_<" .vbdate($vbulletin->options['dateformat'], $thread['dateline']) . " format=\"%d%m%y\"$>\">
<area shape=\"rect\" href=\"http://imageads.googleadservices.com/pagead/imgclick/<" .vbdate($vbulletin->options['dateformat'], $thread['dateline']) . " format=\"%d%m%y\"$>?pos=0\" coords=\"1,2,367,28\"/>
<area shape=\"rect\" href=\"http://services.google.com/feedback/abg\" coords=\"384,10,453,23\"/></map>
<img usemap=\"#google_ad_map_<" .vbdate($vbulletin->options['dateformat'], $thread['dateline']) . " format=\"%d%m%y\"$>\" border=\"0\" src=\"http://imageads.googleadservices.com/pagead/ads?format=468x30_aff_img&amp;client=CLIENTIDXXXXX&amp;channel=&amp;output=png&amp;cuid=<" .vbdate($vbulletin->options['dateformat'], $thread['dateline']) . " format=\"%d%m%y\"$>&amp;url=<$MTEntryPermalink encode_url=\"1\" archive_type=\"Individual\"$>\"/></p>]]>\r\n";

where CLIENTIDXXXXX is my adsense code.
But it doesn't work.

Have some of you been able to use adsense for feed with vbulletin?

Thanks