diff --git a/entrypoint.go b/entrypoint.go
index 1d9d914..8f341fd 100644
--- a/entrypoint.go
+++ b/entrypoint.go
@@ -6,32 +6,38 @@ import (
 	"cloud.o-forge.io/core/oc-lib/models/resources"
 )
 
+type LibData int
+
 const (
-	INVALID    = resources.INVALID
-	DATA       = resources.DATA
-	PROCESSING = resources.PROCESSING
-	STORAGE    = resources.STORAGE
-	DATACENTER = resources.DATACENTER
-	WORKFLOW   = resources.WORKFLOW
+	INVALID    LibData = iota
+	DATA               = resources.DATA
+	PROCESSING         = resources.PROCESSING
+	STORAGE            = resources.STORAGE
+	DATACENTER         = resources.DATACENTER
+	WORKFLOW           = resources.WORKFLOW
 )
 
+func (d LibData) EnumIndex() int {
+	return int(d)
+}
+
 func Init() {
 	mongo.MONGOService.Init(models.GetModelsNames(), GetConfig())
 }
 
-func LoadOne(name string, id string) interface{} {
-	return models.Model(name).GetAccessor().LoadOne(id)
+func LoadOne(col LibData, id string) interface{} {
+	return models.Model(col.EnumIndex()).GetAccessor().LoadOne(id)
 }
 
-func UpdateOne(name string, set map[string]interface{}, id string) interface{} {
-	return models.Model(name).GetAccessor().UpdateOne(set, id)
+func UpdateOne(col LibData, set map[string]interface{}, id string) interface{} {
+	return models.Model(col.EnumIndex()).GetAccessor().UpdateOne(set, id)
 }
 
-func DeleteOne(name string, id string) interface{} {
-	return models.Model(name).GetAccessor().DeleteOne(id)
+func DeleteOne(col LibData, id string) interface{} {
+	return models.Model(col.EnumIndex()).GetAccessor().DeleteOne(id)
 }
 
-func StoreOne(name string, object map[string]interface{}) interface{} {
-	model := models.Model(name)
+func StoreOne(col LibData, object map[string]interface{}) interface{} {
+	model := models.Model(col.EnumIndex())
 	return model.GetAccessor().StoreOne(model.Deserialize(object))
 }
diff --git a/models/models.go b/models/models.go
index b6a1296..56a228c 100644
--- a/models/models.go
+++ b/models/models.go
@@ -12,19 +12,19 @@ import (
 )
 
 var models = map[string]func() utils.DBObject{
-	w.WORKFLOW:               func() utils.DBObject { return &w.Workflow{} },
-	r.ToString(r.DATA):       func() utils.DBObject { return &d.Data{} },
-	r.ToString(r.DATACENTER): func() utils.DBObject { return &dc.Datacenter{} },
-	r.ToString(r.STORAGE):    func() utils.DBObject { return &s.Storage{} },
-	r.ToString(r.PROCESSING): func() utils.DBObject { return &p.Processing{} },
+	w.WORKFLOW:            func() utils.DBObject { return &w.Workflow{} },
+	r.DATA.String():       func() utils.DBObject { return &d.Data{} },
+	r.DATACENTER.String(): func() utils.DBObject { return &dc.Datacenter{} },
+	r.STORAGE.String():    func() utils.DBObject { return &s.Storage{} },
+	r.PROCESSING.String(): func() utils.DBObject { return &p.Processing{} },
 }
 
-func Model(model string) utils.DBObject {
+func Model(model int) utils.DBObject {
 	log := logs.CreateLogger("oclib", "")
-	if _, ok := models[model]; ok {
-		return models[model]()
+	if _, ok := models[r.FromInt(model)]; ok {
+		return models[r.FromInt(model)]()
 	}
-	log.Error().Msg("Can't find model " + model + ".")
+	log.Error().Msg("Can't find model " + r.FromInt(model) + ".")
 	return nil
 }
 
diff --git a/models/resources/resource.go b/models/resources/resource.go
index bd29560..38cd53e 100644
--- a/models/resources/resource.go
+++ b/models/resources/resource.go
@@ -26,8 +26,17 @@ var str = [...]string{
 	"workflow",
 }
 
-func ToString(r ResourceType) string {
-	return str[r]
+func FromInt(i int) string {
+	return str[i]
+}
+
+func (d ResourceType) String() string {
+	return str[d]
+}
+
+// EnumIndex - Creating common behavior - give the type a EnumIndex functio
+func (d ResourceType) EnumIndex() int {
+	return int(d)
 }
 
 type Resource interface {