diff --git a/inc/hgl/type/DataStackPool.h b/inc/hgl/type/DataStackPool.h
index b7e10a2..ffff3ea 100644
--- a/inc/hgl/type/DataStackPool.h
+++ b/inc/hgl/type/DataStackPool.h
@@ -36,7 +36,7 @@ namespace hgl
 
             end=data_array+max_count;
 
-            series.Init(max_count);
+            return series.Init(max_count);
         }
 
         ~DataStackPool()
diff --git a/src/Type/DataChain.cpp b/src/Type/DataChain.cpp
index 0e4fe14..549c2a2 100644
--- a/src/Type/DataChain.cpp
+++ b/src/Type/DataChain.cpp
@@ -26,6 +26,8 @@ namespace hgl
         start->next=nullptr;
         start->start=0;
         start->count=max_count;
+
+        return(true);
     }
 
     DataChain::UserNode *DataChain::Acquire(const int acquire_count)