[TYPO3-dev] Add And modify column via $TCA

[Pierre Rouwens]

Hi there,

I need to modify the TCA via an extension ...
I've created an empty extension via kickstarter and manually add a 
tca.php which contains this :
<?php
if (!defined ('TYPO3_MODE')) 	die ('Access denied.');

$TCA['tt_content']['columns']['colPos']['config']['items']['1']['0'] = 
"Contenu principal";

?>
But it doesn't works... i know i'm wrong somewhere but can't figure out 
where ... any hint please

Pierre