分母為0

 請問怎樣改指標才不會分母為0

Value1 = (close-(high+low)/2)*(close-(high+low)/2);

Value2 = (close[1]-(high[1]+low[1])/2)*(close[1]-(high[1]+low[1])/2);

Value3 = (close[2]-(high[2]+low[2])/2)*(close[2]-(high[2]+low[2])/2);

value4 = volume*Value1;

value5 = volume[1]*Value2;

value6 = volume[2]*Value3;

value7 =(value4+value5+value6);

value8 =(value4/value7);

value9 =(value5/value7);

value10 =(value6/value7);

value11 = (close*value8);

value12 = (close[1]*value9);

value13 = (close[2]*value10);

value14 = (value11+value12+value13);

plot1(value14,"3日");