Programmatically set update source location

Is there a way to programmatically set where the app updater looks for updates? We have an application that will be deployed to multiple networks and would like for the software to look on the local networks for the updates. Is it possible for the update path to be passed to the updated programmatically?

One option is to use the %updatepath% variable in the download site and pass the what value replaces that variable using the "-updatepath" commandline argument in wyUpdate.

See: -updatepath="<url>" in wyUpdate Commandline