Mid-event tagging from Eprime3 to net station at a user specified time

Hi folks, I’m trying to display a movie through Eprime 3 to the participants. During the movie, I’d like to sent a tag from Eprime to Net Station EEG acquisition to mark specific scenes from the movie. Right now, I can only tag the beginning of the movie, but not the middle of it. If anyone can offer some insight on how to send a mark to net station from Eprime during an event, I really appreciate it. Many thanks,