DCA - Extend only eval

[wotanskrieg]

Hi.
Is it possible to only extend eval of field?

For example I have made module which extend event with some extra fields.
I have need to extend or change field "location" eval so that 'tl_class' will have 'w50' and not 'long' (as core).

Does anybody has some experience or idea how to achieve that?

Kind regards,
Andraz

[Andreas]

untested

$GLOBALS['TL_DCA']['tl_events']['fields']['location']['eval']['tl_class'] = 'w50'; 

[wotanskrieg]

Unfortunately it doesn't work

[wotanskrieg]

Don't know why my post wasn't submited but ok.

Andreas unfortunately this code snippet isn't working :S