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Passing XML data:

Example:

Animals:= THtXMLNode.Create('<animals><animal name="Dog" color="yellow"/>'+
  '<animal name="Bird" color="green"/></animals>');
R := THtReportDocument.Create;
try
 R.RegisterVariable('animals', Animals, true);
 R.Parse(TemplateText);
 s := R.Render;
finally 
  R.Free 
end;

Passing Delphi objects

For converting Delphi object to XML using RTTI (2010+) there are two functions in htxml unit:

ObjecttoXML(const O: TObject; ClassProp: boolean = false; Node: THtXMLNode = nil; UpperCaseName: boolean = true): THtXMLNode

RecordtoXML(const R; RecTypeInfo: pointer; ClassProp: boolean = false): THtXMLNode

Passing JSON

To pass JSON data to report use THtXMLNode.CreatefromJSON and pass created object via RegisterVariable function.