Random number for prime

Hello everyone,

I will need to generate the value for x using the time frame. x is in (0-1). I know mathcad 13 has seed function, I tried that on prime and it doesn't work. Would you please help me to with the function?.

That is the scenario 4 if you want to take a look 🙂 thank you so much everyone again. I also attached the sheet I create for step by step