I see now that you have a syntax error. You should be using a colon, not equals sign.
$(go.TextBlock, "----",
{ textEditor: customTextEditor() },
new go.Binding("choices")
I see now that you have a syntax error. You should be using a colon, not equals sign.
$(go.TextBlock, "----",
{ textEditor: customTextEditor() },
new go.Binding("choices")