grails modalbox redirect back to parent window

I am new to grails, and I have been开发者_运维问答 trying to get the following functionality to work.

I am using grails modal box, and I have a save button. When I click on save, how can I close the modal box, and pass a variable back to the parent window?

I think I'm doing what you want in my Customer Change actions in a couple screens at http://ibidem.cloudfoundary.com. Login as ibidem/ibidem and do a Customer Change on a Lookup Table.

Then if this is what you want, see https://trac.maflt.org/web/ibidem/browser/trunk/src/ibidem/grails-app/views/lookupTable/show.gsp

and the corresponding controller: https://trac.maflt.org/web/ibidem/browser/trunk/src/ibidem/grails-app/controllers/org/maflt/ibidem/LookupTableController.groovy