I want Automatic Buy/Sell Order in Trading in FOREX.

I want to give any one Buy preorder in one amount with Pre defined selling price.... , And after when current rate will reach upto Pre-order value then order will be activated. After activation of order, It will reach upto predefined selling price--order will be executed and profit will come. -----Now actual requirement is Preorder and Pre defined selling rate should be again to be placed on same time and same rate of previous order.