Wordpress プラグインFront End PMでタイトルと本文の文字数制限を調整する方法

編集するのは、このファイル
有料版：wp-content/plugins/front-end-pm-pro/includes/class-fep-form.php
無料版：wp-content/plugins/front-end-pm/includes/class-fep-form.php

'message_title' => array(
  'label'					=> __( 'Subject', 'front-end-pm' ),
  //'description'			=> __( 'Enter your message subject here', 'front-end-pm' ),
  'type'					=> 'text',
  'required'				=> true,
  'placeholder'			=> __( 'Subject', 'front-end-pm' ),
  'minlength'				=> 5,
  'maxlength'				=> 100,
  'disabled'				=> false,
  'value'					=> '',
  'id'					=> 'message_title',
  'name'					=> 'message_title',
  'class'					=> 'input-text',
  'priority'				=> 10,
  'where'					=> array( 'newmessage', 'shortcode-newmessage', 'new_announcement' ),
),
'message_content' => array(
  'label'					=> __( 'Message', 'front-end-pm' ),
  'type'					=> ( 'shortcode-newmessage' == $where ) ? 'textarea' : fep_get_option( 'editor_type','wp_editor' ),
  //Ajax form submit creating problem with wp_editor
  'required'				=> true,
  'minlength'				=> 10,
  'maxlength'				=> 5000,
  'placeholder'			=> '',
  'priority'				=> 15,
  'value'					=> '',
  'where'					=> array( 'newmessage', 'reply', 'shortcode-newmessage', 'new_announcement' ),
),

'minlength'と'maxlength'を調整する