Warn About Changes and page flow

Hi, in dev guide, it is said:
For any single page, or first page in a navigation flow where the retainAM URL parameter value is set to Y (and the pages share the same root UI application module) as you navigate between each page, set the Warn About Changes property to True on the pageLayout region.
in other word, if pages in page flow are in the same AM, after changing am in the first page, anytime leave the following page to click the home link(oracle branding), the WarnAboutChanges msg should be alerted?
But,
Now I have two pages, using the same AM, set the two pages' property "Warn About Changes" to true.
And I want to implement this: after inputing some words, and click a sunmitButton forward to pageB(add retainAM = Y in setForwardURL in code), then in pageB don't do anything, but click home link, WarnAboutChanges message does not alert.
Could anyone help to explain this?
And how to implement the page flow warnAboutChanges?
And how root application module to set if different pages in different AMs?
PreThanks to you very much!

But,
Now I have two pages, using the same AM, set the two pages' property "Warn About Changes" to true.
And I want to implement this: after inputing some words, and click a sunmitButton forward to pageB(add retainAM = Y in setForwardURL in code), then in pageB don't do anything, but click home link, WarnAboutChanges message does not alert.
Could anyone help to explain this?
I asked u previously also read dev guide properly, here it what dev guide say:
"By default, the Warn About Changes property is set to True for each of the items in this list except for the
OASubmitButtonBean whose default value is False (a ccording to the UI guidelines, the "Warn About
Changes" check should be performed for all submit button instances except for Cancel, Apply and Submit
buttons). If you want to explicitly enable the check for a submit button, set this property to True. Note that can
also set it programmatically by calling OASubmitButtonBean.setWarnAboutChanges(pageContext,
Boolean.TRUE) in processRequest()."
I hope this answers ur question.
And how to implement the page flow warnAboutChanges?
Read "Save Model ('Warn About Changes')" in dev guide :).And how root application module to set if different pages in different AMs?
You can nest differnt AMs in on AM in AM wizard.--Mukul

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keith shacks wrote:
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