diff --git a/bucket_funcs.go b/bucket_funcs.go
index 83a1e0c..8b1a3d9 100644
--- a/bucket_funcs.go
+++ b/bucket_funcs.go
@@ -79,7 +79,7 @@ func GetBucket(bkt *bolt.Bucket, path ...string) (*bolt.Bucket, error) {
 	ret, err = bkt.CreateBucketIfNotExists([]byte(path[0]))
 	if len(path) > 1 {
 		for idx := 1; idx < len(path); idx++ {
-			ret, err = bkt.CreateBucketIfNotExists([]byte(path[idx]))
+			ret, err = ret.CreateBucketIfNotExists([]byte(path[idx]))
 			if err != nil {
 				return nil, err
 			}
@@ -102,6 +102,24 @@ func SetString(bkt *bolt.Bucket, key, val string) error {
 	return bkt.Put([]byte(key), []byte(val))
 }
 
+func GetUint64(bkt *bolt.Bucket, key string) (uint64, error) {
+	if bkt == nil {
+		return 0, fmt.Errorf("bucket must not be nil")
+	}
+	r, err := GetString(bkt, key)
+	if err != nil {
+		return 0, err
+	}
+	return strconv.ParseUint(r, 10, 64)
+}
+
+func SetUint64(bkt *bolt.Bucket, key string, val uint64) error {
+	if bkt == nil {
+		return fmt.Errorf("bucket must not be nil")
+	}
+	return SetString(bkt, key, strconv.FormatUint(val, 10))
+}
+
 func GetInt(bkt *bolt.Bucket, key string) (int, error) {
 	if bkt == nil {
 		return 0, fmt.Errorf("bucket must not be nil")
@@ -252,7 +270,7 @@ func SetStringList(bkt *bolt.Bucket, val []string) error {
 	return nil
 }
 
-func AddToStringList(bkt *bolt.Bucket, key string, values ...string) error {
+func AddToStringList(bkt *bolt.Bucket, values ...string) error {
 	if bkt == nil {
 		return fmt.Errorf("bucket must not be nil")
 	}
@@ -271,6 +289,51 @@ func AddToStringList(bkt *bolt.Bucket, key string, values ...string) error {
 	return nil
 }
 
+func AddToUniqueStringList(bkt *bolt.Bucket, values ...string) error {
+	if bkt == nil {
+		return fmt.Errorf("bucket must not be nil")
+	}
+	genseq := func(id uint64) []byte {
+		bId := make([]byte, 8)
+		binary.BigEndian.PutUint64(bId, id)
+		return bId
+	}
+	currList, _ := GetStringList(bkt)
+	var err error
+	for _, v := range values {
+		add := true
+		for _, currV := range currList {
+			if currV == v {
+				add = false
+				break
+			}
+		}
+		if add {
+			id, _ := bkt.NextSequence()
+			if err = bkt.Put(genseq(id), []byte(v)); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+func StringListContains(bkt *bolt.Bucket, value string) (bool, error) {
+	if bkt == nil {
+		return false, fmt.Errorf("bucket must not be nil")
+	}
+	currList, err := GetStringList(bkt)
+	if err != nil {
+		return false, err
+	}
+	for i := range currList {
+		if currList[i] == value {
+			return true, nil
+		}
+	}
+	return false, nil
+}
+
 func GetKeyValueMap(bkt *bolt.Bucket) (map[string][]byte, error) {
 	ret := make(map[string][]byte)
 	if bkt == nil {