>SCATTER NAME creates object not array, maybe you want :
>scatter TO ThisForm.aNewValues

Of course! How could I overlook that? (Against stupidity...) I had tried to create an array property; with a regular property, SCATTER NAME and GATHER NAME work all right.

Here is some sample code, for Canh:

* Form.Init()
ThisForm.AddProperty("aNewValues")

* TestButton.Click()
wait window "Old value: " + C1
replace C1 with "xyz"
wait window "New value: " + C1
scatter name ThisForm.aNewValues && Undo
TableRevert()
wait window "Old value: " + C1
gather name ThisForm.aNewValues && Redo
wait window "New value: " + C1

The table, which contains a field called C1, was previously opened with buffering = 5.

For the real application, the "Undo" and "Redo" actions would be in different buttons.