Issue calling an action chain with required variable defined in flows from a page event

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We have an action chain defined at our flows/home level (global to all of our pages), and the action chain has a required boolean variable.  We have a click event defined on a button on one of our pages.  However, on the click event we are unable to see the required parameter so we are unable to map it.  The only way we could work around this issue was to define an action chain local to the page to be able to map the required parameter, and have the local action call call the action chain defined at the flow/home