Please help me with this basic indicator

[suprsnipes]

Hi,

I need an idea of how to create a very basic indicator. All I want to do is take the session open (very similar to the CurrentDayOHLC NT indicator) and subtract it by 20pts and display this value on the chart in the same manner.

I have never used NinjaScript before, apart from the tutorials, but I am still struggling to understand how to do the above.

Any help will be greatly appreciated, I am a fully licensed user by the way.

Thank you in advance

[NinjaTrader_Bertrand]

suprsnipes, please try something like this to get this value with 20 tick offset -

 
double myOffsetOpen = CurrentDayOHL().CurrentOpen[0] - 20 * TickSize;