LT3757 flyback converter output voltage and current

Hi All,

I am using LT3757 flyback converter application and run the simulation in LTspice.

I want to use LT3757 convert 12V input to 180V. The SCH is same as the example in datasheet, which shows below, and i changed the  16.2K resistor to 31.4K Ohm.

My question is

1. How do I set the output voltage? I just change the resistor connect to FBX, is this right?

2. How do calculate the maximum output current?

I  also attahced the LTspice design file.

Thanks & Best Regards

LT3757_Flyback_180.asc