Heal rotation question

[hokken]

Hello,

I have started playing with the healrotation feature. Basically I have created a healing rotation instance with just my cleric in it and one target which is the tank. What I want to achieve is to prevent the cleric to start healing the tank too soon but at something like 50% of his HPs. I have been trying to set that up playing with healrotationadjustcritical and healrotationadjustcritical without sucess, my cleric keep healing my tank as soon as he is at 95% of his HPs. Anything I missed ?

Thanks