How to make zombie spawn behind the player

[simple nexus]

command /backstab:
    permission: skript.example.broadcast
    trigger:
        set {_playerLocation} to location of event-player
        set {_offsetVector} to vector -2, 0, 0  # Move 2 blocks backward on X-axis
        set {_spawnLocation} to {_playerLocation} add {_offsetVector}
        spawn a zombie at {_spawnLocation}
        
        # Play cave ambient sound at player's location
        play sound "AMBIENT_CAVE" at player's location```

It's not working properly and it will make the ambient cave sound but it wouldn't spawn the zombie behind the player that executed the command

[alpine bough]

add -> with offset

[simple nexus]

like in blocks or?

[rancid lava]

{_playerLocation} ~ {_offsetVector}

[simple nexus]

?

[rancid lava]

thats how you offset a location by a vector

[simple nexus]

in what line, sorry still learning

[rancid lava]

the line

[alpine bough]

line 6, iirc

[alpine bough]

I was telling you to replace add with with offset, but you can also just use ~

you can't add a number to a location, that just doesn't make sense

[simple nexus]

like this?

[alpine bough]

you forgot the {} around your variable

[simple nexus]

oh okay

[alpine bough]

and it's with offset, not just with

[simple nexus]

sorry it's my first time in 4 years that I use skript

[simple nexus]

set {_spawnLocation} to {_playerLocation} with offset {_offsetVector}