Laravel 5 Migration change length of existed column : <p>It not work, I search so many ways, How can I change length of value in laravel 5</p>

<pre><code>public function up()
{
    Schema::table('articles', function (Blueprint $table) {
        $table-&gt;string('name',50)-&gt;change();
    });
}
</code></pre>

<p>Thank you all for reading!</p>
