Try to fix equation-update function

    # Loop over all elements to find "Equation" and change to "EQ"

    for equation in root.xpath('.//m:oMath', namespaces=ns):

        p = equation.getparent()

        # Surrounding paragraph

        p = equation

        while p is not None and p.tag != f"{{{ns['w']}}}p":

            p = p.getparent()

        if p is None:

            continue

        pStyle = p.xpath('./w:pPr/w:pStyle', namespaces=ns)

        if pStyle:

            current_style = pStyle[0].get(f"{{{ns['w']}}}val")

            # Do not overwrite Example/Note Styles

            if current_style in ["EW", "NO", "TAN"]:

                continue

            pStyle[0].set(f"{{{ns['w']}}}val", new_style)

        counter += 1

    print(f'Changed style "Equation" to "EQ" {counter} times')