Leading Spaces

Hi,

i'm using &vbdpa-posnr& and &vbdpa-kwmeng& field in my line item printing in script. both having leading zeros, to void leading zeros i used

&vbdpa-vbeln(z)& then its working fine. 000010 coverted to 10

where as when i'm using &vbdpa-kwmeng(Z)& its not working. can any one let me know the reason and solution for that.

Thanks & Regards

Munna