How do I return to the originating form when the user completes a form in a pop up box?.

How do I return to the originating form when the user completes a form in a pop up box?.

I want to do something really simple.
I have a form that a user fills in then presses decision field that then opens another form to complete in a pop up window. If the form exists it opens the existing form otherwise it opens a new form for the user to complete.

What I'm trying to do is go back to the original form when the user closes the pop up window. In other words.

From a report view, open  new or existing application form. FORM A, whilst completing FORM A, the user launches FORM B in a pop up window from a decision field action. When completed FORM B, the user presses either Update or Submit depending if it a new or existing form.  What i then want is the application to return the user to FORM A.

I have tried all the following options but none work work.

openUrl("#Script:page.parent.back", "same window");
openUrl("#Script:dialog.close", "same window");
openUrl("#Script:page.close", "same window");
openUrl("#Script:page.parent.reload", "same window");

all that happens is that I just get a message "Data submitted successfully" or I get taken to the report that FORM A was launched from.

Any  help?
I'm using ZOHO creator.eu
Thanks.