NT8 Issues with Declaration of Variables

[CKnudsen]

I am trapping bad data in a multi-time frame Indicator using 10 Tick, 50 Tick, 1 Minute & 5 Minute time frames.
I am trying to save the current value as LastEASlope.
But every time the data goes negative I get an error message as seen in the attachment.

I have tried every combination of things I can think of and still can’t find a solution.
While using the “New Indicator Builder” I have tried:
Type: double
Minimum = 0
Minimum = -100
Minimum = NULL
All had the same response- it doesn’t like negative numbers


Code Samples

if (State == State.SetDefaults)
EASlope = 0;
LastEASlope = 0;


#region Properties
[NinjaScriptProperty]
[Display(Name="EASlope", Order=7, GroupName="Parameters")]
Public double EASlope
{ get; set; }

[NinjaScriptProperty]
[Display(Name="LastEASlope", Order=8, GroupName="Parameters")]
public double LastEASlope
{ get; set; }





Code

var BadData = false; //Error Checking (this is the Primary Series)
if(EASlopeSeries[0] >= 0)
LastEASlope = EASlopeSeries[0];
else if(EASlopeSeries[0] < 0)
LastEASlope = EASlopeSeries[0];
else
{
EASlopeSeries[0] = LastEASlope;
BadData = true;
}



Please help me with a viable solution.

Chris Knudsen

[NinjaTrader_JoshG]

Hello CKnudsen,
Thanks for your post.

One thing you could potentially do is not let that variable be set to a negative number. Maybe assign it a zero instead, when it would otherwise be negative. I modified your snippet to show you what I mean:

if(EASlopeSeries[0] >= 0)
	LastEASlope = EASlopeSeries[0];
else if(EASlopeSeries[0] < 0)
[B]	LastEASlope = 0;[/B]

I will leave this post open for any other members that would like to provide advice or other solutions.

[CKnudsen]

Thank you... I'll try it, but why doesn't NT8 like the negative numbers? What am I doing wrong?

[NinjaTrader_JoshG]

I think that is an error with C# and not necessarily a NinjaScript limitation. It could be your public property as well. Maybe try switching it out with something that defines the range like this.

[NinjaScriptProperty]
[Range(-100, double.MaxValue)]
[Display(Name="LastEASlope", Order=8, GroupName="Parameters")]
public double LastEASlope
{ get; set; }