How can I integrate police job to this command?

I couldn't make only "police" jobs can toggle this command with if xPlayer.job.name == "police" then this code but it didn't worked as I planed

local xPlayers = ESX.GetPlayers()

RegisterNetEvent("pepperspray:Togglepepperspray")
AddEventHandler("pepperspray:Togglepepperspray", function()

    if not holdingpepperspray then
        RequestModel(GetHashKey(peppersprayModel))
        while not HasModelLoaded(GetHashKey(peppersprayModel)) do
            Citizen.Wait(100)
        end

        RequestAnimDict(animDict)
        while not HasAnimDictLoaded(animDict) do
            Citizen.Wait(100)
        end
    end

you can do like this :

RegisterNetEvent("pepperspray:Togglepepperspray")
AddEventHandler("pepperspray:Togglepepperspray", function()

    local xPlayer = ESX.GetPlayerData();

    if xPlayer.job.name == "police" then

        if not holdingpepperspray then
            RequestModel(GetHashKey(peppersprayModel))
            while not HasModelLoaded(GetHashKey(peppersprayModel)) do
                Citizen.Wait(100)
            end

            RequestAnimDict(animDict)
            while not HasAnimDictLoaded(animDict) do
                Citizen.Wait(100)
            end
        end
    else
        print("Vous n'avez pas le bon metier");
    end

end)

Dont use your first line of your script, because is just use during the script load. For efficiency, use it only when you need on a function and before a for or while.