Hi. I have no knowledge of programming.
I want to know the size of the body of a bar and get it with this code:

Value.Set(Math.Abs(Open[0]-Close[0]));

Now I want that if the size of the body of the bar is greater than 10 bar draw yellow.
NinjaTrader forum have given me this code

if (Value[0] > 10)
BarColor = Color.Yellow;

But does nothing.
Can anyone tell me the correct way to write the code?
Thank you.

Since I gather you want to test if body is greater than eg. 10 ticks you need to multiply the values of your Value by TickSize:

 

Code

Value.Set(Math.Abs(Open[0]-Close[0])*TickSize);

Also if you have no programming experience always use {} after if, eg.:

 

Code

if (Value[0] > 10) { BarColor = Color.Yellow; }

This will help you avoid unintentional errors;