diff --git a/src/nzg_create.c b/src/nzg_create.c
index 9c0e5ed..3413207 100644
--- a/src/nzg_create.c
+++ b/src/nzg_create.c
@@ -16,6 +16,7 @@ msgSpace * msgSpaceCreate(
 	msgPool * queueNbCar // tableau de caracteristiques des different pool
 	){
 
+  // on créee
   // on ajoute spaceId a la liste des msgSpace connus
 
   // on crée queueNb files de messages
@@ -31,3 +32,12 @@ msgSpace * msgSpaceCreate(
 }
 
 
+void msgSpaceOpen(msgSpaceId){
+  return NULL;
+}
+
+void msgSpaceDelete(msgSpaceId spaceId){
+  // 
+  
+}
+
diff --git a/src/nzg_iface.h b/src/nzg_iface.h
index b25710b..0737813 100644
--- a/src/nzg_iface.h
+++ b/src/nzg_iface.h
@@ -1,8 +1,15 @@
 #include "types.h"
 
-typedef int msgSpaceId;
-typedef int msgSpace;
-typedef int msgPool;
+typedef char * msgSpaceId;
+
+typedef struct MsgPool {
+
+} msgPool;
+
+typedef struct MsgSpace {
+  
+} msgSpace;
+