通达信主看趋势股票指标公式

这个指标指标看着没未来函数，但信号会消失，请高手指点？
 
VAR3A:=((HHV(H,21)-C)/(HHV(H,21)-LLV(L,21)))*100-10;
 VAR4A:=((C-LLV(L,21))/(HHV(H,21)-LLV(L,21)))*100;
 VAR5A:=SMA(VAR4A,13,8);
 VAR6A:=SMA(VAR3A,21,8);
 趋势:=CEILING(SMA(VAR5A,13,8));
 X:=趋势-VAR6A<(-65),COLOR00FF00;
 VAR2:=100*(INDEXC-LLV(INDEXL,21))/(HHV(INDEXH,21)-LLV(INDEXL,21));
 下潜深度:=SMA(VAR2,3,1);
 G:=下潜深度<12;
 XG:X AND G,COLORF00FF0;