Use two Languages in the same document

[KhaledAMARI]

Hello @Hopding !
I manage to use a RTL(Right to Left) and LTR(Left to Right) languages in the same document using pdf-lib Library, i uploaded a new font that supports both languages and then when i get the PDF i get a strange result:

The RTL language is correctly printed but the LTR was inversed and become readable from right to left.
Do ou have any suggetions please.

Thanks in advance