Hi there I#m trading binary options with clmforex directly in my meta trader and the Syntax for binary options there is as follows ( I put it as a custom mql in my ea and it works).
OrderSend(Symbol(), OP_BUY, Investment, 0, 0, 0, 0, "BO exp:60", magic number, 0, color);
Where OP_BUY is a call and OP_SELL is a put option.
The Expiry has to be as comment in that form and has to work with your broker(seconds)
The Investment also has to be ok with your broker. The zeros are for stop/Loss, Take Prof, etc which you don`t need because of the binary thing.
So they stay as they are ... Hope I could help you.
Gabriel