First of all, I am appreciate all these people who done it for me. I would like to say Thanks you all of you include my teacher Tiwa Park(Ph.D), consultant who teach me all that transfer knowledge and new experience during work at Agility until the last day of work. Also my family and friends give me many help push me up, give me some advice and cheer me up. These are very important for me and them. My report will not success if I do not have them. Thank you all of you again.