Hi,
Thanks guys!
I have seen that those fields were attached to some types. Then I had to create new "non-attached" fields .
But still there is one think I can´t understand. I have had to create a new field; I was trying ti change the folder and type of storage for the old one and it was no possible. I full fill the the custom storage fields, I click on save and nothing changes, nothing happends, those fields are still empty after saving content.
Regards,
Diego.