Hello Amin,
I work for them .
You have to go as you are i believe they are based in Miami with a hiring office and the check out flight is done with Pan Am simulator B 767 to see how you perform in a IFR condition, ALso they have a interview with a young captain in fact he decides who enters or not.
Also have a short OFR written examination.
But if you have the experience they look for go and do it al least they won't charge you if you do not pass.
good luck...