Dynamically set Oracle Apex 5.1 interactive grid region header



I'm wondering if it's possible to dynamically change the interactive grid region header text. I have an IG that provides detail from a "master" report, and I'd like the HTML header text to update dynamically to display the title of the master record being displayed.

I'm guessing I'll need to create a custom dynamic action, but I'm not sure how to identify / reference the region header text element.

I appreciate any ideas.

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