font in bold

Hi How can we put text in bold ?
is do “bold”:“true” but doesnt work

Not sure, this works for me.

  {
    "text": "Testing",
    "bold": true
  },

For future reference of those searching for putting bold into invoices you can go bold by doing words you want bold

is there more syntax like the double-stars?

It’s covered in this video:

https://www.youtube.com/watch?v=X8NlwyWcq08