Buy and Sell EA FOR MT4

Hi Everyone, 

I need to automate Buy or Sell with some condition.I used to get calls like below Buy above or Sell below.At the end of the day,Only one will get executed daily.

I need to create a mql4 code to place Buy n Sell order.If any one of the Buy or Sell executed, the other order needs to be cancelled automatically.

If Copper Buy above 418 order is executed , the Sell below 416 order need to be cancelled.Please suggest.