Hi Henry and forum friends, Nice indicator you have there: http://forum.equis.com/v...hp?t=423&highlight=renko I was working on automating the K value to be equal to the default done by Metastock, instead of doing it manually for each graph as I also needed to include the value in an Expert Advisor. I reached the following result that I would like to share: RenkoBoxSize Indicator: VarI:=Cum(1); VarII:=((HHV(H,LastValue(VarI-PREV+PREV)) - LLV(L,LastValue(VarI-PREV+PREV))) / 25); VarII Then in your code I would change the fixed K value like this: K:= LastValue( Fml( "RenkBoxSize") ) ; RenkoLine:=If(Cum(1)=1,CLOSE, If(PREV>=0, If(CLOSE<PREV-2*K,-(PREV-2*K), Floor(Max(C-PREV,0)/K)*K+PREV), If(CLOSE>Abs(PREV)+2*K,-PREV+2*K, Floor(Max(Abs(PREV)-C,0)/K)*K+PREV))); RL:=Abs(RenkoLine); RL; BW:=If(Cum(1)=1,0, If(RL>Ref(RL,-1),+1,If(RL<Ref(RL,-1),-1,PREV))); BW;0; Thanks: goes to Henry for the Renko, and to Patrik for the usage of variables example. Thanks, Bulli ;)