How to have a Custom Container's text in the Header

Question

I am trying to build a custom container. I have created a separate object for my header and set User.msvStructureType = "Heading"

I'd expect that when selecting the container, any text I type will be in the header but that's not the case.

The text is showing up centered in the container.

How can I have my container behave like the built in containers, when you select the container and type any text it is automatically placed into the header?

Solution

Your custom container is a group shape, and your header is a sub-shape of the group. Select your group shape, then, on the Developer tab, click Shape Design \ Behavior, then ensure that Edit text of group is unticked.