How to replace several $ with TABs in Datawedge

Hello,
I am using code 128 with a variable number of $ characters.

example:
123 $ 4657 $ $ c $ DEF 890AB
12 $ 456789

I want every $ to be replaced by a tab (\x09).
I use a TC51 on Android 7 (Nougat)
How to adjust the ADB rule in DATAWEDGE 7.2.5?

Regards,

JS LALLICAN