Kinematic object doesn't collide with dynamic object

[Vince]

Hi,

I want to have collision between a keyed object and a dynamic object but it doesnt seem to work. If the repulsion factor is higher than 0 the dynamic object moves when the keyed object hits it, which means the collision detection works.

For the dynamic object :
setActivationState(ACTIVE_TAG);
getMotionState()->setDynamic(true);

For the keyed object
setCollisionFlags(getCollisionFlags() & ~btCollisionObject::CF_KINEMATIC_OBJECT);
setActivationState(DISABLE_DEACTIVATION);
getMotionState()->setDynamic(false);

Any idea why it doesnt work ?

Thanks
Vincent