regular expression in custom fields for issue list and detail

hello,

is it possible to set a regular expression on custom field in order to transform the result in the issue list

ie : http://www.test.com/number is the content and the regular expression to get number is #.*/(.*)$#ui

the problem is that it does not show the number in the isseu list nor in the issue detail

thanks for your help

tchalla

Redmine