First you should edit file.cio file and save it with notepad and write "calibration.cal" at "chg" row after the "cal_parms.cal" like this:

and then create a "calibration.cal" file with your parameter set and their values like this:

then run the model with executable file (.exe).
But if you run it using the editor, it recreates file.cio without calibration.cal and the model runs without your parameter values.
If you want run the model using with editor after creating calibration.cal file, go to the run swat+ on the left menu, extent the input files option and click to the "advanced" option, do the same settings at file.cio file so the editor can't change that part of the file.cio. Save&close at the end then run it with the editor.