modifying script using NACE

hi there,

I am trying to modify the script RVORDER01. I have copied it to ZVORDER01.

also assigned the output types in NACE. in va02 from sales doucment tab i have selected issue output to.....

now the standard print program.....is in display mode....am trying to execute it...and its not executing.....

could someone tell me how to execute it.

thanks.