Importance of bowlers in I.P.L

Importance of bowlers in I.P.L says Ashish Nehra.

Nehra ,retired  from international cricket last november.Now Nehra join as a bowling coach of Royal Challengers Bangalore in Indian Prime League in 2018

After joining as a bowling coach he says that the bowlers will play important role in I.P.L 2018.

Nehra says that"I can't change the players" in two to three months.My bowlers have a talent to do good ball.But I can says when,what kind of ball in needed for our team to change the situation for winning the match.