BI Publisher - RTF template - write a numeric value in letters

Summary

Need to write in letters a numeric value from a BIP field

Content

Hello,

I am creating a RTF template that I want to display as a report in BI Publisher.

In this RTF, I'd like to put the salary of an employee, but written in letters ("three thousands and fifty euros" instead of "3050 euros").

I know there is a formula that does that in Word when adding a Word field with Alt+F9. For example, {=10\*cardtext} would display "ten".

However, I haven't managed to do that with a HCM field (Salary amount) as value to write in letter.