Difference fillomino

Rules:Divide the grid into polyominos ,and write a number in every cell,such that every number in the grid is contained in a polyomino of that area.Polyominos of the same size cannot touch through edges.A polyomino can contain one,more than one,or none of the given numbers.Some cells have clues of the form x(y) followed by an arrow. 'x' is the absolute difference between the number in that cell and the number in the cell that is 'y' units away from that cell in the direction indicated by the arrow.