Pass Request to method in Laravel

I want to pass the request parameter to the method, but i fail every time. I am beginner in PHP.

`

public function changeModel(Request $request)
    {
        $u1 = $request->U;
        
        Schema::table('planspieldatas', function (Blueprint $table) {
            $table->renameColumn('U1', $u1);
    });
    
        Artisan::call('migrate');
        return redirect('/pssettings')->with('success-upload', 'Daten für Markt'.$u1);
    }

`

I am not able to pass the $u1 variable to the Schema::table method. Is there any option to change the coloumn names in sql from the front end.

I am not able to pass the $u1 variable to the Schema::table method. Is there any option to change the coloumn names in sql from the front end.

>Solution :

You are using Closure method so you need to use use() method to pass variables like

Schema::table('planspieldatas', function (Blueprint $table) use ($u1) {
        $table->renameColumn('U1', $u1);
});