if len(setOverlay) == 0 {
		return "", nil
	}
	tree := make(map[string]any)
	for _, kv := range setOverlay {
		kvv := strings.Split(kv, "=")
		if len(kvv) != 2 {
			return "", fmt.Errorf("bad argument %s: expect format key=value", kv)
		}
		k := kvv[0]
		v := util.ParseValue(kvv[1])
		if err := tpath.WriteNode(tree, util.PathFromString(k), v); err != nil {
			return "", err
		}