請老師幫忙編寫一下：

ma(c,5)金叉ma(C，60)，建立2N手數(shù)多頭倉位；當C跌破ma(C,60)時，平多倉N手；

當ma(c,5)死叉ma(C，60)，建立2N手數(shù)空頭倉位；當C上穿ma(C,60)時，平空倉N手；

                                                                                                                  謝謝老師了！~

ma5:=ma(c,5);

ma60:=ma(c,60);

if cross(ma5,ma60) then buy(holding=0,2*n,market);

if holding>0 and cross(ma60,c) then sell(1,n,market);

if cross(ma60,ma5) then buyshort(holding=0,2*n,market);

if holding<0 and cross(c,ma60) then sellshort(1,n,market);