hi Rmathews,
thanks for your reply. the proj was originally written in 8.2,
but when i opened and modified it in 8.5, i made changes to 'create ramp vi'.
then again i had to run that proj on another sys with labview 8.2. so i need to modify it for 8.2.
when i opened in 8.2, i found that create ramp vi was not found..
i have saved 'create ramp vi' for previous version(8.2) from 8.5 and the probelm is solved.
Kudos always welcome for helpful posts 🙂