def METHOD_NAME(change):
    contraction_textbox.value = my_demo.edsl_snippets["Contraction"][change["new"]]
    contraction_textbox.placeholder = contraction_textbox.value
    contraction_boilerplate = widgets.HTML(value=my_demo.boilerplate_html[change["new"]])
    contraction_out.clear_output()
    with contraction_out:
        display(contraction_boilerplate)