diff --git a/storage/tracking/tracking.go b/storage/tracking/tracking.go
index 06b0724..e83f7d7 100644
--- a/storage/tracking/tracking.go
+++ b/storage/tracking/tracking.go
@@ -11,10 +11,17 @@ import (
 	sql "git.sr.ht/~cco/go-scopes/storage"
 )
 
+type ItemFactory func() Track
+
 type Track interface {
 	TrackId() lib.Ident
 }
 
+type Container interface {
+	New(lib.StrSlice, lib.Map)
+	CreateTable()
+}
+
 type BaseTrack = track
 type BaseContainer = container
 
@@ -28,13 +35,6 @@ type track struct {
 	container *container
 }
 
-func SimpleTrack(taskId, userName string, data lib.Map) track {
-	return track{
-		head: lib.StrMap{"taskId": taskId, "userName": userName},
-		data: data,
-	}
-}
-
 func (tr *track) TrackId() lib.Ident {
 	return tr.trackId
 }
@@ -48,7 +48,7 @@ type container struct {
 	storage    *sql.Storage
 }
 
-func SimpleContainer(db *sql.Storage) *container {
+func Tracks(db *sql.Storage) *container {
 	return &container{
 		tableName:  "tracks",
 		headFields: []string{"taskId", "userName"},
@@ -57,7 +57,17 @@ func SimpleContainer(db *sql.Storage) *container {
 	}
 }
 
-func (cont *container) Insert(tr *track) lib.Ident {
+func (cont *container) New(headValues lib.StrSlice, data lib.Map) Track {
+	head := lib.StrMap{}
+	for i, k := range cont.headFields {
+		head[k] = headValues[i]
+	}
+	tr := &track{head: head, data: data}
+	cont.insert(tr)
+	return tr
+}
+
+func (cont *container) insert(tr *track) lib.Ident {
 	var columns []string
 	var values []any
 	for _, k := range cont.headFields {
@@ -74,7 +84,7 @@ func (cont *container) Insert(tr *track) lib.Ident {
 		"columns":   columns,
 	}
 	sql := storage.BuildSql(SqlInsert, data)
-	if res := storage.QueryCol[uint](db, sql, values...); res != nil {
+	if res := storage.QueryCol[lib.Ident](db, sql, values...); res != nil {
 		trid := lib.Ident(res[0])
 		tr.trackId = trid
 		tr.container = cont
@@ -83,7 +93,7 @@ func (cont *container) Insert(tr *track) lib.Ident {
 	return 0
 }
 
-func (cont *container) CreateTable() *container {
+func (cont *container) CreateTable() {
 	db := cont.storage
 	data := lib.Map{
 		"schema":     db.Schema,
@@ -93,8 +103,7 @@ func (cont *container) CreateTable() *container {
 		"params":     db.Params,
 	}
 	sql := storage.BuildSql(SqlCreate, data)
-	if _, err := db.Exec(sql); err == nil {
-		return cont
+	if _, err := db.Exec(sql); err != nil {
+		panic(err)
 	}
-	return nil
 }
diff --git a/tests/storage_test.go b/tests/storage_test.go
index 453bf6c..c0145b7 100644
--- a/tests/storage_test.go
+++ b/tests/storage_test.go
@@ -68,8 +68,7 @@ func BaseTest(t *testing.T, cfg *sql.Cfg, db *sql.Storage) {
 func TrackingTest(t *testing.T, cfg *sql.Cfg, db *sql.Storage) {
 	cont := tracking.SimpleContainer(db)
 	cont.CreateTable()
-	track := tracking.SimpleTrack("t01", "john", lib.Map{})
-	cont.Insert(&track)
+	track := cont.New(lib.StrSlice{"t01", "john"}, lib.Map{})
 	t.AssertEqual(track.TrackId(), lib.Ident(1))
 }