diff --git a/src/main/java/com/dreamworks/boditech/driver/task/step/StepCapTube.java b/src/main/java/com/dreamworks/boditech/driver/task/step/StepCapTube.java
index 3daeefb..8f7a6d7 100644
--- a/src/main/java/com/dreamworks/boditech/driver/task/step/StepCapTube.java
+++ b/src/main/java/com/dreamworks/boditech/driver/task/step/StepCapTube.java
@@ -1,6 +1,7 @@
 package com.dreamworks.boditech.driver.task.step;
 import com.dreamworks.boditech.driver.Device;
 import com.dreamworks.boditech.driver.actuator.ActMotor;
+import com.dreamworks.boditech.driver.actuator.ActTestTubeCapClipMotor;
 import com.dreamworks.boditech.driver.actuator.ActuatorModule;
 import com.dreamworks.boditech.driver.consumable.CsmSampleTube;
 import com.dreamworks.boditech.driver.task.Executor;
@@ -8,7 +9,7 @@ import com.dreamworks.boditech.driver.task.Task;
 import com.dreamworks.boditech.driver.task.TaskTest;
 public class StepCapTube extends StepBase {
     private ActMotor testTubeMoveMotor;
-    private ActMotor testTubeCapClipMotor;
+    private ActTestTubeCapClipMotor testTubeCapClipMotor;
     private ActMotor testTubeClipMotor;
 
     @Override
@@ -20,7 +21,7 @@ public class StepCapTube extends StepBase {
 
         Device device = executor.getDevice();
         this.testTubeMoveMotor = (ActMotor)device.getActuator(ActuatorModule.TEST_TUBE_SHAKING_MOVE_MOTOR);
-        this.testTubeCapClipMotor = (ActMotor)device.getActuator(ActuatorModule.TEST_TUBE_SHAKING_CAP_CLIP_MOTOR);
+        this.testTubeCapClipMotor = (ActTestTubeCapClipMotor)device.getActuator(ActuatorModule.TEST_TUBE_SHAKING_CAP_CLIP_MOTOR);
         this.testTubeClipMotor = (ActMotor)device.getActuator(ActuatorModule.TEST_TUBE_SHAKING_CLIP_MOTOR);
 
         String tubeType = taskTest.getSampleTube().type;
@@ -42,9 +43,9 @@ public class StepCapTube extends StepBase {
     // cap for blood tube 5ml
     private void capForBloodTube5ml() {
         this.testTubeMoveMotor.moveTo("shakeTestTubeMoveCapClip");
-        this.testTubeCapClipMotor.moveTo("shakeTestTubeCapClipOpen");
+        this.testTubeCapClipMotor.open();
         this.testTubeMoveMotor.moveTo("shakeTestTubeMoveStandby");
-        this.testTubeCapClipMotor.moveTo("shakeTestTubeCapClipClose");
+        this.testTubeCapClipMotor.close();
         this.testTubeClipMotor.rotate(ActMotor.ROTATE_DIRECTION_COUNTER_CLOCKWISE);
         this.testTubeClipMotor.stop();
     }