Needing Armor Invisibility Skript and Help with Crackshot

[AstroFox_Gaming]

Alright, so in order, I will tell you guys what I want/need for my server.

I am looking for a Skript that will allow players to go invisible when they wear a FULL set of Chain armor and they will go back visible when they take off a single piece.

Another thing is that I have a ton of guns in my crackshot plugin, and I am unable to find out how to find out what line this is in:
in 'string', line 1, column 1:

Riotshield:

^

expected <block end>, but found BlockMappingStart

in 'string', line 3468, column 2:

Abilities:

^

I know there is a simple fix, but it's pretty hard to find out what line is by simply counting every line. Needless to say I'm looking for something that would help me go straight to said line.

Thank you for reading,
Astro

 

[AstroFox_Gaming]

Add me on skype please:
live:erict499_1 (copy and paste the "live:" with the rest)