if()
{
}
妳的錯誤在於，妳沒有把IF後面的語句用大括號括起來．
正確的應該是這樣：
datetime time=0;
if(time!=Time[0])
{
OrderSend(Symbol(),OP_BUY,0.2,Ask,200,Ask-1500*Point,Ask+5000*Point,Symbol()+"Buy",0,0,Blue);
OrderSend(Symbol(),OP_SELL,0.1,Bid,200,Ask+1500*Point,Ask-5000*Point,Symbol()+"sell",0,0,Red);
time=Time[0];
}