Hi everybody, I am trying to write my "first" formula but I am having big troubles. I hope somebody can help here. What I want to do is quite simple (at least thats what I think): I want to plot how many bars ago the cumulative volume was lower than the some threshold which is calculated as = current cumulative volume - a_constant_value Constant:=300000000;{300 Million} CV:=Cum(V); Threshold:=CV-Constant; BarsSince(Cross(CV,Threshold)); I know the above formula doesnt work. And I probably know why it doesnt work:Since threshold is dependent on CV, CV can never cross threshold because threshold will always be recalculated and it will always be lower than CV. Is there any other way to do this? I will be very glad if anybody can help. Thanks. Akif,

I think I couldnt express what I want. Your suggestion only finds out the point in time when the cumulative volume is greater than the constant. This is not what I want. I want to implement the indicator what Steve Woods is explaining in his Float Analysis book.So what i want is for every bar in the graph i want to plot the number of bars=> which shows how many bars back when the cumulative volume was less than the (cumulative volume of the "current bar" - constant). So to give an example lets think the constant value is 1 Million and bar[50] has cumulative volume=5 Million and cumulative volume for bar[40]=4 Million. I want to create a formula whichs shows at bar[50] the value of 10. Because 10 bars ago cumulative volume was 1 Million less(constant value less) Is there a way to do this? Thanks in advance. Akif,

Thank you that you gave an example. Just to explain it better think that constant value is not 1 million but 2 million. Think we are going backwards. We are at bar 7. We have cumulative volume 4 Million. Subtact the constant value from this 4-2=2million. Our target for bar 7 is to find out when the CV has crossed above 2 million. cv at bar 4 is 1.6million and at bar5 it is 2.2 million. So For 7 I want to see 2. which tells me 2 bars back (bar5) CV just crossed up the target volume for bar7. Continuing with the example for bar 6. CV is 2.7 million subract 2 million from this value we have 0.7 million as the target.when CV has crossed this value-> at bar 3(from 0.5 at bar2 to 1.2 at bar3) so for bar 6 I want to see 3 which tells me 3 bars back(bar3) CV has crossed up my target volume for bar6. I googled a little bit and on purebytes forum i think it is said it is impossible to do this in metastock. I think I selected a very hard one for my first indicator. But it looks very simple in logic and I already coded it for metatrader but it turns out it is not very possible for metastok. I would be really glad if you know a way to do this. Akif,