multiple orders code

Hi,

Would like that someone could help me...

I'm looking to place multiple orders once one is open, what I mean is;

Say that I have one buy order open, then if the price goes in the other direction, every time that the price differs, say 50 pips from the open price another buy order will be open and so one.

To close. The close will be for any separate order.

Thank in advance

Luis Neves