Automatically Map Your Samples in Kontakt

VofN

I'm watching https://www.youtube.com/watch?v=fUebTyo2ebI
How to Automatically Map Your Samples in Kontakt 6
All ok until I run Lua script.
I then get this message

"The following error message informs you that the creator tools are not focused on a kontakt instrument to solve this load and instrument in kontakt and select it from the instrument. Drop down menu on top
Error: ...a Scripts\Tutorials\Tutorial 6 - Samples Automapping. lua:68 attempt to index a nil value (global 'instrument')
Stack traceback:
...a Scrips\Tutorials\Tutorial 6 - Samples Automapping. lua: in main chunk"

When I randomly select a kontakt instrument and run the script again it says E-Piano II created.
After push it does not appear in Kontakt.

I'm just an old singer that needs some help!!!!