diff --git a/demo/85-template-document.ts b/demo/85-template-document.ts
index d219170491..43e345b0b0 100644
--- a/demo/85-template-document.ts
+++ b/demo/85-template-document.ts
@@ -1,8 +1,10 @@
 // Simple template example
 // Import from 'docx' rather than '../build' if you install from npm
 import * as fs from "fs";
-import { fromDocx } from "../build";
+import { Paragraph, patchDocument, TextRun } from "../build";
 
-fromDocx(fs.readFileSync("demo/template.docx")).then((doc) => {
+patchDocument(fs.readFileSync("demo/assets/simple-template.docx"), {
+    children: [new Paragraph("ff"), new TextRun("fgf")],
+}).then((doc) => {
     fs.writeFileSync("My Document.docx", doc);
 });
diff --git a/demo/assets/simple-template.docx b/demo/assets/simple-template.docx
new file mode 100644
index 0000000000..c9afe4f66d
Binary files /dev/null and b/demo/assets/simple-template.docx differ
diff --git a/demo/template.docx b/demo/template.docx
deleted file mode 100644
index fd05df5947..0000000000
Binary files a/demo/template.docx and /dev/null differ
diff --git a/src/templater/from-docx.ts b/src/templater/from-docx.ts
index cec1a84877..b17bbf1f90 100644
--- a/src/templater/from-docx.ts
+++ b/src/templater/from-docx.ts
@@ -1,16 +1,27 @@
 import * as JSZip from "jszip";
 import { xml2js, ElementCompact, js2xml } from "xml-js";
+import { replacer } from "./replacer";
 
 // eslint-disable-next-line functional/prefer-readonly-type
 type InputDataType = Buffer | string | number[] | Uint8Array | ArrayBuffer | Blob | NodeJS.ReadableStream;
 
-export const fromDocx = async (data: InputDataType): Promise<Buffer> => {
+export interface PatchDocumentOptions {
+    readonly children: any[];
+}
+
+export const patchDocument = async (data: InputDataType, options: PatchDocumentOptions): Promise<Buffer> => {
     const zipContent = await JSZip.loadAsync(data);
 
     const map = new Map<string, ElementCompact>();
+    console.log(options);
 
     for (const [key, value] of Object.entries(zipContent.files)) {
         const json = toJson(await value.async("text"));
+        if (key === "word/document.xml") {
+            console.log(json);
+            replacer(json, options);
+        }
+
         map.set(key, json);
     }
 
diff --git a/src/templater/replacer.ts b/src/templater/replacer.ts
new file mode 100644
index 0000000000..830c0a5054
--- /dev/null
+++ b/src/templater/replacer.ts
@@ -0,0 +1,15 @@
+import { Paragraph, TextRun } from "@file/paragraph";
+import { ElementCompact } from "xml-js";
+import { PatchDocumentOptions } from "./from-docx";
+
+export const replacer = (json: ElementCompact, options: PatchDocumentOptions): ElementCompact => {
+    for (const child of options.children) {
+        if (child instanceof Paragraph) {
+            console.log("is para");
+        } else if (child instanceof TextRun) {
+            console.log("is text");
+        }
+    }
+
+    return json;
+};