By the way, I believe there might be a misunderstanding regarding the syntax of the .tran command. You can refer to this post for more information. Since you didn’t upload your schematic and I’m feeling a bit lazy to build it myself, I’ll just give you a quick reminder. I think my last post should address your issue by suggesting an alternative way to implement what you need.
Why are the simulation results different after updating the program? - QSPICE - Qorvo Tech Forum