On Balance Volume and horizontal line

 
Hi, I have a question about On Balance Volume. Is it possible to put horizontal line which is always in the middle, no matter what the highest and lowest number is displayed on the right side. Just calculate middle between highest and lowest number of right. And maby anyone can write a code. Thaks for answers.
 
ammygo: Hi, I have a question about On Balance Volume. Is it possible to put horizontal line which is always in the middle, no matter what the highest and lowest number is displayed on the right side. Just calculate middle between highest and lowest number of right. And maby anyone can write a code. Thaks for answers.

You can modify the codes of OBV to perform this simple task for you.

If you cannot learn to code it then you can make a request here.