Yes... I am tired. It worked.
Here's an extension-free slider you can copy, using the Designer Copy (Ctrl-C) Paste (Ctrl-V) on the surrounding Vertical Arrangement.
The event blocks and all the internal components should ride along for the paste, and AI2 should renumber the pasted components.
canvas_slider_vertical.aia (2.5 KB)

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Thanks. That may be useful too.