Hello Brian Nicholls,
It seems the binding to this happens at an inappropriate time.
I would like to suggest you look at this demo:
https://www.htmlelements.com/react/demos/grid/editing-command-column-custom/
You could try to use this approach for your case.
Also, I would like to suggest you try to change declaration from const to let option only to try:
let [showWarehouseId, setShowWarehouseId] = useState(0);
Best Regards,
Hristo Hristov
jQWidgets team
https://www.jqwidgets.com