I think you'll have to do it with scale. I'm pretty sure you can't add relations involving 2 different drawing views or between a drawing view and a sketched line that isn't part of the same drawing views.
Thanks for your input guys.
I have tried scaling but often get overlapping views...i guess i need to do something a bit more clever when it comes to working out the scale
Deepak, yes Driveworks would be ideal but unfortunately we already have a different piece of automation software, so I am having to use that and a script to call functions in the API.