automation control of Container LIST orientation

I dropped a 'Plain' container from Visio INSERT tab to drawing, and changed User.msvStructureType from "container" to "list".
The shape behaved like a VERTICAL list, with values of User.msvSDListAlignment and User.msvSDListDirection affecting the List along the vertical axis of the drawing page.

But I could not turn the List into a horizontal one, where additional items are added to either the left of right side of previously existing items.

I used RefS:,

and fear I've missed the point.

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Scott HelmersVisio Consultant, Trainer, Author, and DeveloperCommented:
You've referenced the correct article for what you're trying to and I'm not sure why it isn't working either.

I repeated your steps for dropping a container and changing it to a list. Simply adding User.msvSDListDirection with the default value of zero was sufficient to change the list orientation.list example

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Kelvin4Author Commented:
Thanks; my brain was the defective item.
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