lines

Hi Seniors, I want to plot lines in such a way that the lines show up on: 1. 5% of High-Low added to yesterdays high. eg: High=500 Low=450 High-Low=50 5% of 50=2.5 Line should plot at 500+2.5= 502.5 Same way second line 2.5 below 450 450-2.5= 447.5 I tried much but am not good...