Hi I have a Vector X, which inturn has 2 Vector Y & Z. for eg; X -> Y, Z where Y = 1, 2, 3, 4 Z = 5, 6, 7, 8 Hence, X is a Vector of Size -> 2, Y & Z -> 4 Now, I need to change the size of the Vector X to 4. i.e Y = 1, 5 Z = 2, 6 A = 3, 7 B = 4, 8 Hence, X would now be -> (Y, Z, A, B) Thanks Meghna