The error says "Need exactly 3 input series, 1 was passed in."

Not sure where or how to input 3 series. I have input set to 1.

Any ideas?

Imports System
Imports System.Collections.Generic
Imports System.Text
Imports RightEdge.Indicators
Imports RightEdge.Common
' Indicators that implement SeriesCalculatorBaseSimple will support chaining since they can view the calculated
' values of other series inputs.
' See the readme.txt included in this project for more information.
' Use the Indicator Attribute to provide information such as the
' name and description of your indicator. If you do not include
' this attribute, your indicator will not show up in the indicator
' list.
' The Id attribute needs to be set to a unique code that will identify
' your indicator. A GUID is a good candidate.
' Indicators must be marked Serializable in order to be used in
' trading systems.
' Use the SeriesInputAttribute to specify how many inputs your
' indicator uses.
<Indicator(System.Drawing.KnownColor.Black, _
Author:="Name", _
CompanyName:="Company", _
Description:="Test", _
GroupName:="~Jimmy", _
HelpText:="Help", _
Id:="{5F6EFD6C-492C-4312-9259-5F10Q8SB44F8}", _
DefaultDrawingPane:="Test", _
Name:="Test")> _
<Serializable()> _
<SeriesInputAttribute("Input", 1, Value:=BarElement.Close)> _
Public Class Test : Inherits SeriesCalculatorBaseWithValues
<ConstructorArgument("Volatility Period", ConstructorArgumentType.Integer, "10", 1)> _
Public Sub New(ByVal myVOLATILITY_PERIOD As Integer)
MyBase.New(3)
If myVOLATILITY_PERIOD <= 0 Then
Throw New ArgumentException("ATR Lookback period must be greater than zero.")
End If
End Sub
Protected Overloads Overrides Function CalcNewValue(ByVal index As Integer) As Double
Return 20
End Function
Protected Overrides Sub Reset()
End Sub
Public Overloads Overrides Sub SetInputs(ByVal ParamArray newInputs As ISeries())
MyBase.SetInputs(newInputs(0))
End Sub

public class MySeries : ISeries
{
    RList<BarData> data;

    public MySeries(RList<BarData> barSeries)
    {
        data = barSeries;
    }

    protected RList<BarData> barSeries
    {
         get
        {
            return data;
        }
    }

#region ISeries Members

public double LookBack(int nBars)
{
    // Note, change this to accept which element of the bar you want to use, it's hard coded to close
    return BarUtils.GetValueForBarElement(barSeries.LookBack(nBars), BarElement.Close);
}

public double Current
{
     get
     {
        return LookBack(0);
     }
}

public int Count
{
    get
    {
        return barSeries.Count;
    }
}

public virtual bool OldValuesChange
{
    get
    {   return false;   }
}

public int OldestValueChanged
{
    get { return 0; }
}

public SeriesChartSettings ChartSettings
{
    get { throw new NotSupportedException(); }
    set { throw new NotSupportedException(); }
}