Hi Stef87
If Movies is the classname of your Page, and if you placed this code in your pages getCMSFields() function, this should work.
But this is only necessary if there are other classes that extend 'Movies', for which you don't want the field(s) to be created. If not, you can just subclass getCMSFields() in your Movies object, like this:
function getCMSFields() {
$fields = parent::getCMSFields();
// add/remove whatever you like...
return $fields;
}
On the otherhand, if you want the field to be present on a certain page only, and not on its children, then check on the ID, or on the Title instead of the classname. Or create a new PageType just for that page.
If this doesn't help you, then post some code, so we can see what's going on...
[EDIT] Please don't crosspost your questions - I found 2 other variations of this post here and here. It won't get you a response any quicker and it makes it harder for others that have the same issue, to find the solution...