Reg : Leading zeros

hi,

In my report Iam using two parameter values .

P_BUKRS of length 4 chars and has a value of 0600

P_VBUND of length 6 chars and has a value of 470.

Now I need to interchange these values. i.e. P_BUKRS should be 0470 and P_VBUND should be 0600.

now my question is : as P_VBUND is of 6 chars in length I want the value to be 000600.

how to get this?

Regards

vaja