diff --git a/src/main/java/org/bench4q/agent/parameterization/impl/InstanceControler.java b/src/main/java/org/bench4q/agent/parameterization/impl/InstanceControler.java
index e35511a7..47350580 100644
--- a/src/main/java/org/bench4q/agent/parameterization/impl/InstanceControler.java
+++ b/src/main/java/org/bench4q/agent/parameterization/impl/InstanceControler.java
@@ -153,18 +153,14 @@ public class InstanceControler implements SessionObject {
 	 * Implement SessionObject end
 	 */
 
-	public void releaseAll() {
+	private void releaseAll() {
 		for (String xx : usedClassName) {
 			release(xx);
 		}
 	}
 
-	public void release(String className) {
+	private void release(String className) {
 		ParametersFactory pf = ParametersFactory.getInstance();
-		// for(String s: pf.objMap.keySet())
-		// {
-		// System.out.println(s);
-		// }
 		boolean hasThisClass = pf.containObj(className);
 		if (false == hasThisClass) {
 			pf.createObj(className);
diff --git a/src/test/java/org/bench4q/agent/test/parameterization/TEST_UserName.java b/src/test/java/org/bench4q/agent/test/parameterization/TEST_UserName.java
index 40568dfd..3db75627 100644
--- a/src/test/java/org/bench4q/agent/test/parameterization/TEST_UserName.java
+++ b/src/test/java/org/bench4q/agent/test/parameterization/TEST_UserName.java
@@ -1,10 +1,11 @@
 package org.bench4q.agent.test.parameterization;
 
 import org.bench4q.agent.parameterization.impl.InstanceControler;
+import org.bench4q.share.helper.TestHelper;
 
 public class TEST_UserName {
 
-	public static void main(String[] args) {
+	public static void main(String[] args) throws Exception {
 		// TODO Auto-generated method stub
 		// Para_UserNameAndPassword pp = new Para_UserNameAndPassword();
 		// UUID temp = java.util.UUID.randomUUID();
@@ -18,7 +19,8 @@ public class TEST_UserName {
 		System.out.print("\t");
 		System.out.println(passwordName);
 		// pp.unreg(temp);
-		ic.releaseAll();
+		// ic.releaseAll();
+		TestHelper.invokePrivate(ic, "releaseAll", null, null);
 	}
 
 }