func GenID() {
	type bondChaincode struct {
		YYMM  string
		Count int
	}

	yymm := time.Now().Format("0602")

	bondCC := bondChaincode{}
	bondCC.YYMM = yymm
	bondCC.Count = bondCC.Count + 1

	iStr := strconv.Itoa(bondCC.Count)
	for len(iStr) < 6 {
		iStr = "0" + iStr
	}
	// format YYMMxxxxxx
	fmt.Println(yymm + iStr)
}