reactions text to launch clip on selected scene

Hi,
Looking at your post here: https://remotify.io/community/question/how-create-track-launch-mapping-y.....

I can't see the example track launch script to download. In the post it says "I have attached to this post a simple script containing reactions which will do this for you .". Would be great to have that so I know what goes in the little entry field that lives between 'self' and '()'. See my attachment.

Or, if anyone can tell me the syntax for this box or point me to reference that covers launching/firing/triggering the clip on the selected scene, also selecting a scene, using reactions, I'd be very very happy indeed.

Thanks