Hmist6 (operator terminal expert) and tia portal

Has anyone setup comms between an operator terminal expert hmi (model doesnt matter) and tia portal? Cant find much on the web. There is a small description in help file, but very vague. Not that it matters but its a s7-1515 plc

Any help would be appreciated

Link to the help file ?

Probably pretty much same than this youtube video shows for 1200. Put / get needs enabling and you need non optimized db-blocks.

https://www.youtube.com/watch?v=PDYqF0qjg68