[TYPO3-english] typolink.addQueryString.exclude does not work ?

[Gregory Loichot]

Hi,

I'm using TYPO3 4.3.3 and I try to display a canonical tag on my pages 
(but my question is more global than canonical tag), so I wrote a small 
typoscript that *should* work :

lib.canonical = TEXT
lib.canonical.wrap = <link rel="canonical" href="|" />
lib.canonical.typolink {
	parameter.data = page:uid
	useCacheHash = 1
	addQueryString = 1
	addQueryString.method = GET
	addQueryString.exclude = no_cache,cHash,tx_ttnews,tx_contentcountry_pi1
	returnLast = url
}
page.headerData.202 < lib.canonical

Suppose URL like this :
index.php?id=61&tx_contentcountry_pi1[country]=45&tx_contentcountry_pi1[zone]=1&tx_ttnews[tt_news]=35125&cHash=9bc8b2df916&no_cache=1

My typoscript displays :
<link rel="canonical" 
href="index.php?id=61&tx_contentcountry_pi1[country]=45&tx_contentcountry_pi1[zone]=1" 
/>

Question : why are tx_contentcountry_pi1 arguments no removed ?

Thanks a lot,
Greg