APEX Tips : Return a Value From a Modal Dialog

Requirement

We have two pages.

Source Page : A normal page with a Text Field called P2_SOURCE_VALUE and a button called OPEN_MODAL.
Modal Dialog : A modal dialog with a Text Field called P3_MODAL_VALUE and a button called CLOSE_MODAL.

We need the following behaviour.

On the Source Page, when we click the OPEN_MODAL button we want to open the Modal Dialog.
On the Modal Dialog, when we click the CLOSE_MODAL button we want to pass the value of the P3_MODAL_VALUE item back to the P2_SOURCE_VALUE item.

Create a Dynamic Action on the CLOSE_MODAL button with the following settings.
- Name: onClick CloseDialog (amend as required)
- Event: Click
- Selection Type: Button
- Button: CLOSE_MODAL
The "Behaviour" setting of the CLOSE_MODAL button should now default to "Defined by Dynamic Action".
Edit the default True action as follows.
- Action: CloseDialog
- Items to Return: P3_MODAL_VALUE

The OPEN_MODAL button should have the following "Behaviour" settings.
- Action: Redirect to Page in this Application.
- Target: Page 3. In this example we aren't passing any values, but we will set the "Clear Cache" attribute to page "3" in the "Link Builder - Target" popup.
Create a Dynamic Action on the OPEN_MODAL button with the following settings.
- Name: DialogClosed (amend as required)
- Event: Dialog Closed
- Selection Type: Button
- Button: OPEN_MODAL
Edit the default True action as follows.
- Action: SetValue
- Set Type: Dialog Return Item
- Return Item: P3_MODAL_VALUE
- Selection Type: Item(s)
- Item(s): P2_SOURCE_VALUE

It should now work as required.

For more information see:

Hope this helps. Regards Tim...