Andreas Beham Defines a new parameter by adding it to the collection, as well as defining the parameter property https://dev.heuristiclab.com/trac/hl/core/wiki/DevelopersCodeSnippets hl3DefineParam

HeuristicLab.Parameters ParameterVisibility public, private or protected public ParameterType The parameter type (Lookup, Value, ValueLookup, ScopeTreeLookup, ...) Lookup ParameterDataType The data type of the parameter IntValue ParameterName The name of the parameter Name ParameterDescription Missing description. $ParameterName$Parameter { get { return ($ParameterType$Parameter<$ParameterDataType$>)Parameters["$ParameterName$"]; } } // Parameters.Add(new $ParameterType$Parameter<$ParameterDataType$>("$ParameterName$", "$ParameterDescription$"));]]>