Vosk KeyPhrase Problem not working for arabic (Unity)

Hi There,

I'm using vosk sdk for unity and working fine just for english

i have different users with different custom words
i did use KeyPhrase feature on english and it working great.
but when i use it on arabic model it did not working

can you help me please to make KeyPhrase feature on arabic ?

i did try both of two arabic models and it not working
https://alphacephei.com/vosk/models