回复：How did you proof for working in the same field, thanks回复：终于绿

I did the following:
1)listed new publications and patents after I filed I140&I485
2)I happen to got an additional increased of salary due to outstanding performance, therefore, there is a letter from department head letter reagrding this.
3)a letter from my boss in which he says I am still working in the same project and making new progress.

Hope it help!