Find a string a move it to WWW tag

[ffff1111]

Hi, (sorry for my bad english)

I have made this action to find (in ANY tag) the string (http://)www.xxxx.xxx(.xxx):

Field:_TAG

(http://)?(www\.)([a-z0-9-]+)([.][a-z0-9]+)?([.][a-z0-9]+)?(\s*)?

Now I want to move that found string to the WWW tag.

How can I do that?

[Florian]

It's not possible to do this from any tag.

[ffff1111]

..Why not?
After some research I have been able to solve it.