[TYPO3-english] last update date of current page (not parent)

[Katja Lampela]

Hi,

In installation TYPO3 6.2.9 I have a column whose content is inherited 
into subpages with

blah...
variables {
col4 < styles.content.get
           col4.select.where = colPos=4
           col4.slide = -1
}

I want to show the last update date in that "sliding" area. So I put 
some typoscript into it (with typoscript content element):

lib.lastUpdate = TEXT
lib.lastUpdate.data = page:SYS_LASTCHANGED
lib.lastUpdate.strftime = %d.%m.%Y

But this shows the parent page's update date, not current page's. How 
can I make the typoscript check current page's SYS_LASTCHANGED field?

-- 
Kind regards,
Katja Lampela
www.lieska.net