The support group has confirmed, after kindly pursuing some experiments, that the OG5 applescript library does not support changing the outline sequence of a set of siblings.

(I understand that this has been now been filed as a request)

In the meanwhile, FWIW, I find that scripting the following work-around proves serviceable:

1. Identify your target sequence of sibling shapes,
2. change the layer property of each to move it to a different (temporary) layer,
3. bring each sibling back to the original layer, one by one, changing the layer properties back, in the sequence that you require.

(Links to parents and children remain intact)

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