Help: Creating Rectangle with nano-meter (nm) values

 Hello,

I wrote a skill code in which I was creating rectangle using skill code:

 rodCreateRect(?name "rec" ?cvId geGetEditCellView() ?layer list("M1" "drw") ?width 5 ?length 5 )

 I was not using any units with width and length but now I want to use nano-meter units and this command is giving warning

*WARNING* rodCreateRect: ?width: zero value not allowed - 0

*WARNING* rodCreateRect: ?length: zero value not allowed - 0

*WARNING* rodCreateRect: command failed

Why is this so ? I am using 32nm technology library.

Thanks