Currently i have validation on my text area which does not allow new lines being entered.
It looks like this in the umbraco validation field: ^.{1,3000}$
Any ideas on how to allow new lines and line breaks ?
That regular expression basically says allow ANY character EXCEPT line breaks, between 1 and 3000 times. If you change it to:
^[\s\S]{1,3000}$
It should allow ANY character, including line breaks. The new version says match any character that is either whitespace, or not whitespace, which is effectively any character.