diff --git a/bullet/btKinematicCharacterController.cpp b/bullet/btKinematicCharacterController.cpp
index e2bd63ebf..d93034985 100644
--- a/bullet/btKinematicCharacterController.cpp
+++ b/bullet/btKinematicCharacterController.cpp
@@ -140,6 +140,10 @@ btKinematicCharacterController::~btKinematicCharacterController ()
 {
 }
 
+void btKinematicCharacterController::setVerticalVelocity(float z)
+{
+    m_verticalVelocity = z;
+}
 
 bool btKinematicCharacterController::recoverFromPenetration( btCollisionWorld* collisionWorld )
 {
diff --git a/bullet/btKinematicCharacterController.h b/bullet/btKinematicCharacterController.h
index e851e1cb8..d58e242ad 100644
--- a/bullet/btKinematicCharacterController.h
+++ b/bullet/btKinematicCharacterController.h
@@ -101,6 +101,7 @@ public:
 
 	~btKinematicCharacterController ();
 
+    void setVerticalVelocity(float z);
 
 	///btActionInterface interface
 	virtual void updateAction( btCollisionWorld* collisionWorld, btScalar deltaTime )
diff --git a/bullet/physic.cpp b/bullet/physic.cpp
index d0be072f3..742f99436 100644
--- a/bullet/physic.cpp
+++ b/bullet/physic.cpp
@@ -76,6 +76,7 @@ namespace Physic
     void PhysicActor::setGravity(float gravity)
     {
         mCharacter->setGravity(gravity);
+        //mCharacter->
     }
 
     void PhysicActor::enableCollisions(bool collision)
@@ -83,6 +84,11 @@ namespace Physic
         mCharacter->mCollision = collision;
     }
 
+    void PhysicActor::setVerticalVelocity(float z)
+    {
+        mCharacter->setVerticalVelocity(z);
+    }
+
     bool PhysicActor::getCollisionMode()
     {
         return mCharacter->mCollision;
diff --git a/bullet/physic.hpp b/bullet/physic.hpp
index 9178a5779..0cf6abd4f 100644
--- a/bullet/physic.hpp
+++ b/bullet/physic.hpp
@@ -67,6 +67,8 @@ namespace Physic
 		void setRotation(const btQuaternion& quat);
 
         void setGravity(float gravity);
+        
+        void setVerticalVelocity(float z);
 
         void enableCollisions(bool collision);