diff --git a/session.go b/session.go
index 7025ddc..2e851e8 100644
--- a/session.go
+++ b/session.go
@@ -94,13 +94,15 @@ type SessOpts struct {
 }
 
 // NewManager create new *Manager using SesOpts and aditional any other opts for using in provider
-func NewManager(providerName string, sopts *SessOpts, adopts any) (*Manager, error) {
+func NewManager(providerName string, sopts *SessOpts, adopts any) (manager *Manager, err error) {
 	var prv Provider
 	var ok bool
 	if prv, ok = provides[providerName]; !ok {
 		return nil, fmt.Errorf("session: Provider: %q not found (forgotten import?)", providerName)
 	}
-	prv.SetParams(adopts)
+	if err = prv.SetParams(adopts); err != nil {
+		return nil, fmt.Errorf("session params: %v not valid: %v", adopts, err)
+	}
 	m := &Manager{
 		provider: prv,
 		sessOpts: sopts,
diff --git a/storage/files/files.go b/storage/files/files.go
index 4e62c2a..0d68940 100644
--- a/storage/files/files.go
+++ b/storage/files/files.go
@@ -10,6 +10,7 @@ import (
 	"sync"
 	"time"
 
+	//"git.mtux.eu/darkgopher/session"
 	"github.com/djherbis/atime"
 )
 
@@ -18,8 +19,15 @@ const (
 	sessExt string = "gsd"
 )
 
-func init() {
+var pder *ProviderFiles
 
+func init() {
+	pder = &ProviderFiles{}
+	//session.Register("files", pder)
+}
+
+func ckdirpath(sid string) string {
+	return fmt.Sprintf("%s/%s/%s.%s", pder.sessPath, sessDir, sid, sessExt)
 }
 
 // ProviderFiles implement filesystem session provider
@@ -29,17 +37,13 @@ type ProviderFiles struct {
 	sessPath string
 }
 
-func (pder *ProviderFiles) ckdirpath(sid string) string {
-	return fmt.Sprintf("%s/%s/%s.%s", pder.sessPath, sessDir, sid, sessExt)
-}
-
 func (pder *ProviderFiles) updateAtime(sid string) (err error) {
-	pth := pder.ckdirpath(sid)
+	pth := ckdirpath(sid)
 	return os.Chtimes(pth, time.Now(), time.Time{})
 }
 
 func (pder *ProviderFiles) getAtime(sid string) (atm time.Time, err error) {
-	pth := pder.ckdirpath(sid)
+	pth := ckdirpath(sid)
 	return atime.Stat(pth)
 }
 
@@ -52,7 +56,7 @@ func (pder *ProviderFiles) SetParams(p any) (err error) {
 		}
 		return fmt.Errorf("parameter for files session provider is not string")
 	}
-	return fmt.Errorf("parameter for files session provider must not be nil")
+	return fmt.Errorf("parameter for files session provider must be provided, not nil")
 }
 
 // Init create empty session file if not exists and retturn *Session
@@ -60,7 +64,7 @@ func (pder *ProviderFiles) Init(sid string) (err error) {
 	pder.lock.Lock()
 	defer pder.lock.Unlock()
 	var fd *os.File
-	ckf := pder.ckdirpath(sid)
+	ckf := ckdirpath(sid)
 	if fd, err = os.Create(ckf); err != nil {
 		return fmt.Errorf("create session file: %s failed with err: %w", ckf, err)
 	}
@@ -68,24 +72,32 @@ func (pder *ProviderFiles) Init(sid string) (err error) {
 	return fd.Close()
 }
 
+// Read return existing session by sid or new session if not exists
+func (pder *ProviderFiles) Read(sid string) (sess *SessionFile, err error) {
+	pder.lock.Lock()
+	defer pder.lock.Unlock()
+	return
+}
+
 // SessionFile save session data into files using gob encode/dacode
 type SessionFile struct {
-	sfpth string
+	sid string
 }
 
 // load data from session file
 func (sf *SessionFile) load() (data map[any]any, err error) {
 	var sb []byte
-	if sb, err = os.ReadFile(sf.sfpth); err != nil {
-		return nil, fmt.Errorf("Session file: %s read error: %v", sf.sfpth, err)
+	sfp := ckdirpath(sf.sid)
+	if sb, err = os.ReadFile(sfp); err != nil {
+		return nil, fmt.Errorf("Session file: %s read error: %v", sf.sid, err)
 	}
 	var gobdata bytes.Buffer
 	if _, err = gobdata.Write(sb); err != nil {
-		return nil, fmt.Errorf("Load session file: %s into buffer err: %v", sf.sfpth, err)
+		return nil, fmt.Errorf("Load session file: %s into buffer err: %v", sf.sid, err)
 	}
 	dec := gob.NewDecoder(&gobdata)
 	if err = dec.Decode(&data); err != nil {
-		return nil, fmt.Errorf("Decode gob data from file: %s error: %v", sf.sfpth, err)
+		return nil, fmt.Errorf("Decode gob data from file: %s error: %v", sf.sid, err)
 	}
 	return
 }
@@ -95,16 +107,18 @@ func (sf *SessionFile) save(data map[any]any) (err error) {
 	var gobdata bytes.Buffer
 	enc := gob.NewEncoder(&gobdata)
 	if err = enc.Encode(data); err != nil {
-		return fmt.Errorf("Gob encode file: %s error: %v", sf.sfpth, err)
+		return fmt.Errorf("Gob encode file: %s error: %v", sf.sid, err)
 	}
-	if err = os.WriteFile(sf.sfpth, gobdata.Bytes(), 0o600); err != nil {
-		return fmt.Errorf("Write gob data into file: %s error: %v", sf.sfpth, err)
+	sfp := ckdirpath(sf.sid)
+	if err = os.WriteFile(sfp, gobdata.Bytes(), 0o600); err != nil {
+		return fmt.Errorf("Write gob data into file: %s error: %v", sf.sid, err)
 	}
 	return nil
 }
 
 // Get value from session key k
 func (sf *SessionFile) Get(k any) (v any, err error) {
+	defer pder.updateAtime(sf.sid)
 	var data map[any]any
 	if data, err = sf.load(); err != nil {
 		return nil, err
@@ -114,6 +128,27 @@ func (sf *SessionFile) Get(k any) (v any, err error) {
 
 // Set value of key k to v
 func (sf *SessionFile) Set(k, v any) (err error) {
-	//var data map[any]any
-	return
+	defer pder.updateAtime(sf.sid)
+	var data map[any]any
+	if data, err = sf.load(); err != nil {
+		return err
+	}
+	data[k] = v
+	return sf.save(data)
+}
+
+// Delete remove value of key k from session
+func (sf *SessionFile) Delete(k any) (err error) {
+	defer pder.updateAtime(sf.sid)
+	var data map[any]any
+	if data, err = sf.load(); err != nil {
+		return err
+	}
+	delete(data, k)
+	return sf.save(data)
+}
+
+// SessionID return sid
+func (sf *SessionFile) SessionID() (sid string) {
+	return sf.sid
 }
diff --git a/storage/memory/memory.go b/storage/memory/memory.go
index b835f8d..1b8ea26 100644
--- a/storage/memory/memory.go
+++ b/storage/memory/memory.go
@@ -3,7 +3,6 @@ package memory
 
 import (
 	"container/list"
-	"fmt"
 	"sync"
 	"time"
 
@@ -36,7 +35,7 @@ func (pder *ProviderMemory) updateAtime(sid string) {
 
 // SetParams for memory provider not possible
 func (pder *ProviderMemory) SetParams(pr any) error {
-	return fmt.Errorf("Not possible set parameters for memory session provider")
+	return nil
 }
 
 // Init create new session store for sid