svg image 변수 처리시 주의 점

 GestureDetector(

  onTap: () {
    setState(() {
      detailViewYn =!detailViewYn;
      _changed(detailViewYn);
    });
  },
  child:SvgPicture.asset(
    '${iconNm}',
    width: 9,
    height: 13,
    color: Colors.black,
  ),
),