Coding Problems, Ok new to this system and coding coming from Visual Communication we did some coding but not much,

I am doing the Beginner Stealth project from the website i am on the Game Controller part i keep getting an error with my code it says Assets/LastPlayerSightings.js(20,46): BCE OOO5: Unknown identifier: ‘Tags’. is that an issue with the code i just wrote or is it not able to connect to the identifier? I am a little lost on this one i have checked the code rewrote the code and every time get the same error please help

i actually figured out what the problem was it actually wasn’t the code itself, i wasn’t paying attention and wrote the first few codes in #c and the code i wrote was in js once i rewrote the code in #c it work fine thank you for you response