Adventure Creator - Playmaker save variable script

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using HutongGames.PlayMaker;

namespace AC
{
    public class RememberFSMVariables : Remember
    {
        public PlayMakerFSM fsm;

        public override string SaveData()
        {
            FSMData fsmData = new FSMData();
            FsmInt Pistol1Ammo = FsmVariables.GlobalVariables.FindFsmInt("Pistol1Ammo");
            fsmData.Pistol1Ammo = Pistol1Ammo.Value;
            fsmData.objectID = constantID;

            return Serializer.SaveScriptData<FSMData>(fsmData);
        }

        public override void LoadData(string stringData)
        {
            FSMData data = Serializer.LoadScriptData<FSMData>(stringData);
            if (data == null) return;
            FsmInt Pistol1Ammo = FsmVariables.GlobalVariables.FindFsmInt("Pistol1Ammo");
            Pistol1Ammo.Value = data.Pistol1Ammo;
        }

    }

    [System.Serializable]
    public class FSMData : RememberData
    {
        public int Pistol1Ammo;
        public FSMData() { }
    }

}