nexturl in openurl

nexturl in openurl

i've successfully created "subforms" by following the instructions in http://zohocreator.wiki.zoho.com/Create-Sub-forms.html. ;; that is, my view now has custom actions that execute user-defined functions which in turn call the openUrl function:

((((("https://creator.zoho.com/" + zoho.adminuser) + "/") + zoho.appname) + "/form-embed/Add_Meeting_Attendance/meetingid=") + input.id) + ""

my question is how do i specify the nextUrl in this openUrl function?  what i'd like to be able to do is close the window of the openUrl and reload the parent window.  i tried specifying the nexturl at the end of the URL string and the parameter string but it doesn't seem to have any effect, e.g.,

"height=300,width=500,top=300,left=300,nexturl=javascript:window.close();window.opener.location.reload();"

this is done in this version of the instructions https://creator.zoho.com/help/index.html?url=deluge_ref.html&sub_url=deluge/dummyforms.html which uses a link instead of a custom action button, e.g., below

"<a href= '#' onclick=window.open('/showForm.do?zc-appname=meeting-tracker&zc-formname=Add_Meeting_Attendance&link=true&sharedBy=" + zoho.adminuser) + "&meetingid=") + ID) + "&nexturl=javascript:window.close();','_blank','width=650,height=420')>Add Attendance </a>"

how do i do that in openURL?  or else, can i add that as a link in a field in the view and how?

thanks much for any help.