diff --git a/entrypoint.go b/entrypoint.go
index 362d617..363cc38 100644
--- a/entrypoint.go
+++ b/entrypoint.go
@@ -425,19 +425,15 @@ func (r *Request) StoreOne(object map[string]interface{}) (data LibData) {
 * @param c ...*tools.HTTPCaller
 * @return data LibData
  */
-func (r *Request) CopyOne(collection LibDataEnum, object map[string]interface{}, peerID string, groups []string, c ...*tools.HTTPCaller) (data LibData) {
+func (r *Request) CopyOne(object map[string]interface{}) (data LibData) {
 	defer func() { // recover the panic
 		if r := recover(); r != nil {
 			tools.UncatchedError = append(tools.UncatchedError, errors.New("Panic recovered in CopyOne : "+fmt.Sprintf("%v", r)+" - "+string(debug.Stack())))
 			data = LibData{Data: nil, Code: 500, Err: "Panic recovered in UpdateOne : " + fmt.Sprintf("%v", r) + " - " + string(debug.Stack())}
 		}
 	}()
-	var caller *tools.HTTPCaller // define the caller
-	if len(c) > 0 {
-		caller = c[0]
-	}
-	model := models.Model(collection.EnumIndex())
-	d, code, err := model.GetAccessor(peerID, groups, caller).CopyOne(model.Deserialize(object, model))
+	model := models.Model(r.collection.EnumIndex())
+	d, code, err := model.GetAccessor(r.peerID, r.groups, r.caller).CopyOne(model.Deserialize(object, model))
 	if err != nil {
 		data = LibData{Data: d, Code: code, Err: err.Error()}
 		return