Passing values between PreHandler & PostHandler method in Dynamics 365 FO

    /// <summary>

    /// method -getNum - pre event hanlder

    /// </summary>

    /// <param name="args">Event args</param>

    [PreHandlerFor(tableStr(DevCustomTable),tableMethodStr(DevCustomTable, getNum))]

    public static void DevCustomTable_Pre_getNum(XppPrePostArgs args)

    {

        args.addArg("parmPreArgs", "Value 1234567890");

    }

    /// <summary>

    /// method - getNum- Post event hanlder

    /// </summary>

    /// <param name="args">Event args</param>

    [PostHandlerFor(tableStr(DevCustomTable),tableMethodStr(DevCustomTable, getNum))]

    public static void DevCustomTable_Post_ getNum (XppPrePostArgs args)

    {

        if (args.existsArg("parmPreArgs"))

        {

           Info(args.getArg("parmPreArgs"));

        }

    }