BootstrapHelper.php

<?
  App::uses('AppHelper', 'Viwe/Helper');

  class BootstrapHelper extends AppHelper {
    public $helpers = array('Form');

    public function makeInputWithHelp($fieldName, $options = array(), $helpText) {
      $input = $this->Form->input($fieldName, $options);

      return $input . '<span class="help-block">' . $helpText . '</span>';
    }
  }
?>

tabs-general.ctp

<?php echo $this->Bootstrap->makeInputWithHelp('Name', null, 'I love lamp.'); ?>

What I want.html

<div class="form-group">
  <label class="control-label" for="MonitorName">Name</label>
  <div class="input text">
    <input type="text" id="MonitorName" value="Shed" maxlength="64" class="form-control" name="data[Monitor][Name]">
  </div>
  <span class="help-block">I love lamp.</span>
</div>

What I'm getting.html

<div class="form-group">
  <label class="control-label" for="MonitorName">Name</label>
  <div class="input text">
    <input type="text" id="MonitorName" value="Shed" maxlength="64" class="form-control" name="data[Monitor][Name]">
  </div>
</div>
<span class="help-block">I love lamp.</span>