Group Selection Adornment

Hi,
The default selection adorerment for a group is “blue” rectangle".
I would like to change it to storke(“black”) and srtrokeWitdth(2), See attached sample code :


And the result is a black rectangle which is not sizeable.


See attach pics for collapsed group and expanded group

Found the problem, had to add (go.PlaceHolder)…
Thanks

That’s right. For anyone else reading this, please read GoJS Selection -- Northwoods Software

OK,
Thanks