why can't you use the 'file deploy' job type for this?
If I'm not mistaken, you can't parameterize the source path in a file deploy job. So if you had a property for your source server called ??TARGET.BUILD_SERVER??, it would be unavailable.
But it IS available in a "custom software" deploy job.
I'll double check and be sure.
yeah - you can't - that's a limitation - do you need to do that in this case ?