請問專業幫手策略雷達腳本問題

請教這個策略:K值處於70以上的高檔區,往下穿越D值
如果要排除ETF，請問以下程式如何修改?

input: Length(9), RSVt(3), Kt(3), HighBound(75);

SetTotalBar(maxlist(Length,6) * 3 + 8);

condition1 = GetField("Volume", "Tick") >= 50;

SetInputName(1, "計算期數");

SetInputName(2, "RSVt權數");

SetInputName(3, "Kt權數");

setInputName(4, "高檔區");

variable: rsv(0), k(0), _d(0);

Stochastic(Length, RSVt, Kt, rsv, k, _d);

if k>HighBound and k crosses under _d and condition1

then ret=1;