The 'e' refers to the entity number running the script - in this case the trigger zone, you need to either store the light 'e' in a variable from the light's script (or move this script to the light and store the zone 'e' with a different script) and then put the variable in the HideLight()
Or hover over the light you wish to turn off in the editor, at the bottom will show the entity number (the first number)
Place this number in HideLight()
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