重复发单，一个信号发两次同样的单

If(cross1 && MarketPosition<>1)//假如上穿且无多单
{
Buy(1,Max(open,a1)); //买开仓为上轨价加0
}
If(cross2 && MarketPosition<>-1)//假如下穿且无空单
{
SellShort(1,Min(open,a2)); //卖开仓
}
end