Hi Xinyu,
Which simulator are you using? PSPICE or TINA? In case of PSPICE, please create a .zip file of your entire project directory and in case of TINA, you could send the .TSC file. You can attach the file here when you are posting back by clicking on the "Insert File" (Paper clip) symbol.
The design I created is the same as the reference design contained in the PSPICE model ( in the LM5113 product folder). I just replaced the HS switch with the GANFet.
Thanks,
Lakshmi