Can i get duties modified in reference letter for express entry?

[rajatrurka]

My employer helped me to get ontario nomination under OINP international student with job offer stream. At that time my employer gave me reference letter with some duties copied from NOC website. Now i am eligible under express entry as well. I may get ITA soon. SO my question is can i get my employer to change those duties to what i actually do on work rather than copying directly from NOC website and submit a reference letter with more explained duties.? Anyone with similar experience