Need help to randomise questions in the assessment pool in Captivate 2019

In a course, I need to create 5 questions from a pool of 10 questions. Initially I tried creating 5 pools that contains 2 questions each and enabled randomisation for 1 question per pool. Every time when I retake the assessment on failure, the same questions will be shown again wihtout any randomisation.

Then I tried using 2 pools that contains 5 questions each. This time I have enabled radomisation of 3 from pool 1 and 2 from pool 2. Then also every retake attempt same questions from both pools are repeated. Please suggest how can I create 5 randomised questions from a total of 10 questions.

In my course, my client wants randomised questions every time when a learner retake the assessment without exiting the course. Is it possible to make this happen?