BIAS1:=(C-MA(C,12))/MA(C,12)* 100;
BIAS2:=(C-MA(C,24))/MA(C,24)* 100;
CROSS(BIAS0,bias 1);
REF(BIAS0,1)-bias 0 & gt;-2;
REF(BIAS1,1)-BIAS1 >-0.5;
REF(BIAS0,5)-bias 0 & gt;8;