Simulation of UCC28C41QDRQ1 PWM controller

I was trying to simulate this PWM controller( UCC28C41QDRQ1) from TI,
couldn’t get the output from Qspice. I downloaded the unencrypted spice model from TI and tried the application circuit from the TI for a flyback converter and im not able to generate the pulse from the controller, could somebody help me with this simulation,

Hello @zrtn can you post the qspice schematic?