diff --git a/bigpoint_dyntype.c b/bigpoint_dyntype.c
index 7e4e190..05f2462 100644
--- a/bigpoint_dyntype.c
+++ b/bigpoint_dyntype.c
@@ -30,8 +30,8 @@ __jsonConst(struct BIGPOINT_DYNTYPE * _this, struct json_object * json)
     switch (json_object_get_type(json)) {
         case json_type_int:
             _this->type = BIGPOINT_DYNTYPE_INT;
-            _this->size = sizeof(long);
-            (_this->data)._int = (long)json_object_get_int(json);
+            _this->size = sizeof(int);
+            (_this->data)._int = (int)json_object_get_int(json);
             break;
 
         default:
@@ -56,10 +56,15 @@ __toJson(struct BIGPOINT_DYNTYPE * _this)
 {
     struct json_object * json = NULL;
 
-    /**
-     * @TODO: make a smart implementation here base on the type of the
-     * actual object.
-     */
+    switch(_this->type) {
+        case BIGPOINT_DYNTYPE_INT:
+            json = json_object_new_int((_this->data)._int);
+            break;
+
+        default:
+            json = NULL;
+    }
+
     return json;
 }
 
diff --git a/bigpoint_dyntype.h b/bigpoint_dyntype.h
index 18a016e..86fe3a4 100644
--- a/bigpoint_dyntype.h
+++ b/bigpoint_dyntype.h
@@ -23,7 +23,7 @@ struct BIGPOINT_DYNTYPE {
     size_t size;
     union _data {
         unsigned char _boolean;
-        long _int;
+        int _int;
         double _float;
         char * _string;
         void * _object;
diff --git a/test4.c b/test4.c
new file mode 100644
index 0000000..f4453ae
--- /dev/null
+++ b/test4.c
@@ -0,0 +1,32 @@
+#include <stdio.h>
+#include <string.h>
+#include <json/json.h>
+
+#include "bigpoint_cclass.h"
+#include "bigpoint_dyntype.h"
+
+
+int
+main(int argc, char * argv[])
+{
+    struct json_object * json = json_object_new_int(123);
+
+    struct BIGPOINT_DYNTYPE * dyn = newFromJson(BIGPOINT_DYNTYPE, json);
+
+    printf("%d\n", (dyn->data)._int);
+
+    delete(dyn);
+    json_object_put(json);
+
+    dyn  = new(BIGPOINT_DYNTYPE, BIGPOINT_DYNTYPE_INT, sizeof(int), 321);
+    json = toJson(dyn);
+
+    printf("%s\n", json_object_to_json_string(json));
+
+    delete(dyn);
+    json_object_put(json);
+
+    return 0;
+}
+
+// vim: set et ts=4 sw=4: