預估量做回測

請問，為何我使用以下腳本做回測，跑不出數據?

條件: 當日預估量大於昨日成交量1.8倍 or 5日均量 1.8 倍 or 60日均量 1.8倍且站上均線EMA50，收盤就進場，隔天大於3.5%就出場。

value1 = GetField("估計量");

input:Leng1(50);

variable: ema1(0SetInputName(1,"短均線");

settotalbar(maxlist(Leng1) + 250);

ema1 = ema(close, Leng1);

condition1 = value1 > (GetField("Volume", "D")[1] * 1.8);

condition2 = value1 > average(GetField("Volume", "D")[1] *1.8, 5);

condition3 = value1 > average(GetField("Volume", "D")[1]*1.8, 60);

if close > ema1 and condition1 or condition2 or condition3 then ret = 1;