APEX Model Dialog Title

APEX 5.

I have a report with one col that is linking to an open Model Dialog, What I want is to show one of the report Column as part of the model dialog title. Here is what I did:

1. Create an hidden item in the dialog page: Pxx_TITLE
2. Build the link between the report and the dialog page and transfer the column name to this hidden item
3. In the dialog page, create an after refresh DA, putting following javascript as Action:

apex.util.getTopApex().jQuery(".ui-dialog-content").dialog("option", "title", $v("Pxx_TITLE"))