replacer.addString replaced text correctly, but not with font as text around

Product: pdfnet-node in Node.js

Product Version: @pdftron/pdfnet-node@9.4.0

Please give a brief summary of your issue:
Hello, I use replacer as generate PDF from PDF template (created from DOCx) with specific font, all works correctly, only new replaced text has another font style than text around code in source

I worked in Node.js v14 and i use sample of Convert Office & DOCX Files to PDF with Node.js

Question: How can replace text with same font style of source?

Thx

Fixed! Problem was in preparing PDF template