```
builder.OpenFile("要合并的正文");
var oDocument = Api.GetDocument();

GlobalVariable["filetext"] = oDocument.ToJSON(false, false, false, false, false, false);

builder.CloseFile();
builder.OpenFile("要合并的模板");

var oDocument = Api.GetDocument();
var oParagraphFromJSON = Api.FromJSON(GlobalVariable["filetext"]);
for(var i = oParagraphFromJSON.length - 1; i >= 0; i --){
var oParagraph = oParagraphFromJSON[i];
oDocument.AddElement(10, oParagraph); //正文开始的位置
}

builder.SaveFile("docx", "th333.docx");
builder.CloseFile();
```