field.setRequired(true);
field.setType(FormField.Type.list_single);
field.setLabel("Change type");
field.setVariable("changeType");
field.addOption("Name modified", "nameModified");
field.addOption("Description modified", "descriptionModified");
field.addOption("Property modified", "propertyModified");
field.addOption("Property added", "propertyAdded");
field.addOption("Property deleted", "propertyDeleted");
field.addOption("Other", "other");