Saving arrays and custom property sets

[David Bovill]

>From the docs:

Saving of array valued custom properties
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> Custom properties that have arrays as values are now saved in the stack
> file.
>
> If such a stack file is loaded into a version of Revolution that does not
> support multi-dimensional arrays, any custom properties with an array value
> will not be ignored.
>

So how does this work with custompropertyset syntax etc?