Passing value from one controller to another controller

I want to pass $valPrev from AddressController.php to FrontController.php. I am using with function to pass variable.

Front Controller.php

 public function index2($valPrev){
            $shop=Products::all();
            $valPre = Input::get('valPrev');


    dd($valPrev);
            $garma = Products::where('season','=','Summer')->take(4)->get();
            $sarma = Products::where('season','=','Winter')->take(4)->get();
            $khizan = Products::where('season','=','Autumn')->take(4)->get();
            $bahar = Products::where('season','=','Spring')->take(4)->get();
            $review = Review::orderby('id','desc')->take(2)->get();

            return view('front.index',compact('shop','garma','sarma','khizan','bahar','review'));
        }

AddressController.php

public function store(Request $request)
{
    $this->validate($request,[
        'fname'=>'required',
        'lname'=>'required',
        'Ttl'=>'required',
        'email'=>'required|email',
        'addressline'=>'required',
        'city'=>'required',
        'pro'=>'required',
        'phone'=>'required |http://regex:/^[0-9\-\+]{9,15}$/',

    ]);
    Address::create($request->all());
    $pro=$request->Ttl;

    $proo=$request->pro;

    return redirect('/')->with('valPrev',1);
}

via Chebli Mohamed