Hi Praveen I just want to make sure I understand your system. In classic aim lichello terms The Portfolio Control equals the Constant Value you choose. This value theoretically never changes. The safe in your system is +/- 10% around the constant value/Portfolio Control. This is a no action buy sell zones . When the price is greater than or less than this zone you rebalance back to the constant value amount by apropiately selling or buying as needed.