Coding a Prorealtime charting indicator

Hello, I require code written for a custom indicator that I can insert into my Prorealtime Charting software. I'm not sure what type of programming you would need to use however I gather it would be similar to Metatrader. I want to be able to draw 6 different horizontal lines on the chart at the following price points: - Previous days high - Previous days low - Previous weeks high - Previous weeks low - Previous months high - Previous months low Similar to how a pivot point horizontal line would show up on a chart. Thanks Dan