VAR2:=(3*CLOSE+LOW+OPEN+HIGH)/6;

VAR3:=(20*VAR2+19*REF(VAR2,1)+18*REF(VAR2,2)+17*REF(VAR2,3)+16*REF(VAR2,4)+15*REF(VAR2,5)+14*REF(VAR2,6)+13*REF(VAR2,7)+12*REF(VAR2,8)+11*REF(VAR2,9)+10*REF(VAR2,10)+9*REF(VAR2,11)+8*REF(VAR2,12)+7*REF(VAR2,13)+6*REF(VAR2,14)+5*REF(VAR2,15)+4*REF(VAR2,16)+3*REF(VAR2,17)+2*REF(VAR2,18)+REF(VAR2,20))/210;

VAR4:=MA(VAR3,13);