How to use Mutator zone to give Fuel or items

Im trying to do a simple thing, create a mutator zone that on player enter, refuels the car, but my knowledge is very bad, how can i do it?

Thats my draft code:

using { /Fortnite.com/Devices }
using { /Verse.org/Simulation }
using { /UnrealEngine.com/Temporary/Diagnostics }
using { /UnrealEngine.com/Temporary/SpatialMath }
using { /Fortnite.com/Playspaces }

RefuelDvc := class(creative_device):

Fuel : fuel_pump_device = fuel_pump_device{}
@editable 
Mutant : mutator_zone_device = mutator_zone_device{}


# Runs when the device is started in a running game 
OnBegin<override>()<suspends>:void= 
    Mutant.AgentEntersEvent.Subscribe(OnPlayerEnter) 

OnPlayerEnter(Agent : agent):void= 
    Print("PlayerEnters") 
    # Grants fuel to `Agent`.
    Fuel.Empty<public>(Agent:agent){} #error on that line

should be something like:

OnPlayerEnter(Agent : agent):void= 
    Print("PlayerEnters") 
    Fuel.Empty(Agent)

FunctionName(In_VariableName : In_VariableType):ReturnType=
VariableNameForAfuel_pump_device .FunctionName(In_VariableName)