SymbolOptions does not support Chinese？

[yaolv7]

it doesn't works for Chinese

SymbolOptions _getSymbolOptions(String iconImage, int symbolCount) {
    LatLng geometry = LatLng(
      center.latitude + sin(symbolCount * pi / 6.0) / 20.0,
      center.longitude + cos(symbolCount * pi / 6.0) / 20.0,
    );
    return iconImage == 'customFont'
        ? SymbolOptions(
            geometry: geometry,
            iconImage: 'custom-marker',
            //'airport-15',
            fontNames: ['DIN Offc Pro Bold', 'Arial Unicode MS Regular'],
            textField: '我了个擦咧1',
            textSize: 12.5,
            textOffset: const Offset(0, 0.8),
            textAnchor: 'top',
            textColor: '#000000',
            textHaloBlur: 1,
            textHaloColor: '#ffffff',
            textHaloWidth: 0.8,
          )
        : SymbolOptions(
            geometry: geometry,
            textField: '我了个擦咧2',
            textOffset: const Offset(0, 0.8),
            iconImage: iconImage,
          );
  }

Future<void> _setMapLanguage() async {
    final controller = await _mapReadyCompleter.future;
    await controller.setMapLanguage('name_zh');
    await controller.setMapLanguage('zh');
    await controller.setMapLanguage('cn');
    await controller.setMapLanguage('CHINESE');
    await controller.matchMapLanguageWithDeviceDefault();
}