b.send( order.parentId() );
b.send( order.blockOrder() );
b.send( order.sweepToFill() );
b.send( order.displaySize() );
b.send( order.triggerMethod() );
b.send( order.outsideRth() );
b.send( order.hidden() );
// send combo legs for BAG orders
if(contract.secType() == SecType.BAG) {
b.send( contract.comboLegs().size());