automate existing Indicator for Meta trader 4

Objective = i have existing Indicator that needed to be automated so every time it generates signals it should send limit or market order based on signal. also reverse the trade based on opposite signal is issued. trade should execute when the bar is closed. ability to set lot size . micro , min and standard lots. ability to set market or limit order executed when signal is issued be indicator. ability to test and optimize using strategy tester. need it fast and cheap. will provide the code. thanks