Passsing a value to a method using a custom attribute

I'm trying to understand how can I use custom attributes to call method passing a parameters

    [ExecuteMe("hello", "reflection")]
    public void M3(string s1, string s2)
    {
        Console.WriteLine("M3 s1={0} s2={1}", s1, s2);
    }

I'm trying to call this method using this code:

static void Main(string[] args)
    { 
        var assembly= Assembly.LoadFrom("MyLibrary.dll");

        foreach (var type in assembly.GetTypes())
        {
            object act = Activator.CreateInstance(type);

            var  methodInfos = type.GetMethods().Where(m => m.GetCustomAttributes(typeof(ExecuteMe)).Any());
            foreach (var mInfo in methodInfos)
            {
                //Console.WriteLine(mInfo.Name);
                var argument =  mInfo.GetParameters();

                foreach (var a in argument)
                {

                    Console.WriteLine(a);
                   // a.RawDefaultValue;
                   mInfo.Invoke(act, new object[]{a});
                }


            }


            if (type.IsClass)
                Console.WriteLine(type.FullName);

        }
        Console.ReadLine();

    }

It doesn't work because "a" is a ParameterInfo and invoke want a Object[]. What am I doing wrong and how do I get those values?

this is my attribute:

public class ExecuteMe : Attribute
{
    public object[] args;

    public ExecuteMe(params object[] _args)
    {

            this.args = _args;

    }
}`