Help needed with code for Relative Oscillator Movement (ROM)

 
Hi

Can anyone help me. I am trying to write an Indicator called ROM200 to open up in a new window. I am new to this and even though a programmer myself, I do not know C like langauges.

Indicator I need
For each closing price on a daily chart, I want to plot the ROM Oscillator calculated as follows and as shown by the ROM [200] indicator in image below:
(Closing Price / 200 day Moving Average) . Quite simple, but I need serious help.
Any assistance would help...

Thanks

Example of what the ROM looks like is attached.
Reason: