I think to get a demo license you'll need to register with Aveva support center I'm not sure though about legality of using a demo license for making changes to an application used commercially... you'd need to read their T&Cs.
I think to get a demo license you'll need to register with Aveva support center I'm not sure though about legality of using a demo license for making changes to an application used commercially... you'd need to read their T&Cs.