[TYPO3-english] Overwriting a field (which is defined via flexform_ds.xml)

[Josef F. Glatz]

Hi list,

I want to change the eval from "nospace,trim,alphanum_x" to 
"trim,alphanum_x" of the field "acctables_tableclass" within 
/typo3/sysext/css_styled_content/flexform_ds.xml without editing the file.

Normally I can overwrite a field via TCA. To my knowledge, this is not 
an "normal" field which is defined via TCA.

Is there any possibility to overwrite within an own extension?

(the reason why I want to overwrite is: Twitter Bootstrap ;-] )

-- 
Cheers,
Josef Florian Glatz
blog:  http://typo3blog.at
vcard: http://www.josefglatz.at