[TYPO3-english] New field in pages_language_overlay and TypoScript

[Fabian]

Hello,

If I use the following code:

10 = TEXT
10.field = title

It automatically works for multiple page languages.

Now I have extended the pages table with my own field and I have also 
extended the pages_language_overlay table but when I use the TypoScript 
below it only works for the default language.

10 = TEXT
10.field = tx_myown_field

How can I make it work for multiple languages just like the "title" field?

Kind regards,
Fabian