diff --git a/inc/myco_objects.js b/inc/myco_objects.js
index 8ed0340..c05b51f 100644
--- a/inc/myco_objects.js
+++ b/inc/myco_objects.js
@@ -28,13 +28,9 @@ function GroupList() {
   }
 
   this.export=function() {
-    ret={};
-    for (el in this) {
-      if (this.isGroup(this[el])) {
-        ret[el]=this[el].export();
-      }
-    }
-    return ret;
+    return this.each(function(idx,group) {
+      return group.export();
+    });
   }
 
   this.import=function(groups) {
@@ -60,18 +56,20 @@ function GroupList() {
 
   this.each=function(fct) {
     var idx=0;
+    var ret={};
     for (el in this) {
       if(this.isGroup(this[el])) {
-        fct(idx++,this[el]);
+        ret[el]=fct(idx++,this[el]);
       }
     }
+    return ret;
   }
 
   this.count=function() {
     len=0;
-    for (el in this) {
-      if (this.isGroup(this[el])) len=len+1;
-    }
+    this.each(function(idx,group) {
+      len=len+1;
+    });
     return len;
   }