moving a Line

[Lost Trader]

I know that Add() can only go in Initialize().

Add(new Line(Color.DarkGray, threshold, "Upper"));
Add(new Line(Color.DarkGray, -threshold, "Lower"));

Since threshold is a user input, if the threshold is changed, the Line should move. It doesn't - I believe user input changes are supposed to be known going into Initialize(), so this might be a bug. (64-bit v7..4)

I tried placing the Add() in the OnStartUp() method, but that does not work.

The Lines have names... How do I update them ?

I do NOT want to make a plot of a constant line and update it on every tick. That would be a silly waste of overhead. It also would not extend the line all the way to the right edge but would stop on the last bar.

There must be a reasonable way to do this? Thanks

[NinjaTrader_Austin]

Lost Trader, to clarify, you have an indicator that draws some constant lines defined by user input and the lines don't change if you go into the indicator property window and change the values and hit apply? Or are you trying to update the lines from within your indicator?

[Lost Trader]

Constant Lines at value set by User input. When input value changed in the indicator property window and applied, lines are not moved.
I do NOT want to change during OnBarUpdate().

            Add(new Line(Color.DarkGray, threshold, "Level 1"));
            Add(new Line(Color.DarkGray, 0, "Zero line"));
            Add(new Line(Color.DarkGray, -threshold, "Level -1"));

threshold is a user input variable:

        [Description("threshold for trigger filtering. Must be greater than zero.")]
        [GridCategory("Parameters")]
        public double Threshold
        {
            get { return threshold; }
            set { threshold = Math.Max(0.001, value); }
        }

BTW, default value is 50.

[NinjaTrader_Austin]

Lost Trader, can you please attach the full script so I can test this out on my end?

[Lost Trader]

It is a variant on CCI

[NinjaTrader_Bertrand]

LostTrader, you would use the .Value property of your Lines collection here --

i.e. Lines[1].Value = Threshold;

[Lost Trader]

And apparently it must be done in OnStartUp() because it didn't work in Initialize().

Thank you, Bertrand.