Closing custom form window

I am very new to Oracle Apps and using 11.0.3. My problem happens when I use template form (TEMPLATE.fmb) and reference form APPSTAND.fmb. I generated a custom form by using template form but my problem happens when I close this custom form window through FILE close window. Generated custom form is going to close but other custom form window is open (i.e EXPORT,PROGRESS_IDICATOR and CALENDAR).

How do I solve this problem? Are there any settings to close this window (i.e. EXPORT)? This window is coming from reference form APPSTAND.fmb. I used APP_CUSTOM.CLOSE_WINDOW('window_name') and Hide_WINDOW, but it is not working.

These are the minimum steps to do in order to run your form for the condition. You need to check the pre_form, when_new_form_instance trigger and most of all apps_custom program unit for closing window. In the trigger, put the window name in the apps.set_window_property and give your window_name over there (the one you want to see). In the property class of the module you specify the first window to be displayed.