Trax in the nlp 4 course spec

i signed up for this course a while ago and finally got back to iit recently and now 1 assignment from finishing specilization - funny thing is when i began it was using lukaisTrax library which i was intersted in xploring = iy seemed very quick easier to grasp than tensworflow im trying to llearn all i can so im npt upset but how could i take the okd course too = im pretty sure it was there when i began