Form Control Name You should only use English letters for this field Label Hint Appearance format_color_fill {{ form.get('appearance')!.value | titlecase }} format_color_fill {{ appearance | titlecase }} Disable Mode {{ findDisableModeIcon(form.get('disableMode')!.value) }} {{ form.get('disableMode')!.value | titlecase }} {{ disableMode.icon }} {{ disableMode.name | titlecase }} Datepicker theme circle {{ form.get('themeColor')!.value | titlecase }} circle {{ themeColor | titlecase }} Popup theme circle {{ form.get('popupColor')!.value | titlecase }} circle {{ themeColor | titlecase }} Datepicker icon {{ form.get('datePickerIcon')!.value }} {{ form.get('datePickerIcon')!.value | titlecase }} {{ datePickerIcon }} {{ datePickerIcon | titlecase }} Datepicker Locale calendar_today {{ setLocaleName(form.get('locale')!.value) | titlecase }} calendar_today {{ datePickerLocale.localeName | titlecase }}