Add another value to my custom calculation script

This works when I add the following script to the Custom Calculation in the 'JobType' text field, I type Regular in my 'Status' Text Field the number 1 shows up in 'Job Type' text field.

The problem is I also need to be able to type Temp so the number 2 shows up, but when I try to add it and and I type Regular in the 'Status' field 2 shows up in 'Job Type', not 1.  I've tried everything and it's probably so simple

var a ="";

     if (this.getField("Status").value == "Regular"){

     a="1";

     }

     event.value = a;