Custom "Reply Comment" Link don't work

Hi,

I´m designing my ow own theme and would like to have a customized “Reply Comment” link. When I put this chunk of code, for showing the reply comments link, (<?php comment_reply_link(array_merge( $args, array(‘reply_text’ => ‘Atsakyti’ ,’depth’ => $depth, ‘max_depth’ => $args[‘max_depth’]))) ?>) I get this message. The message appears each time the loop is running.
How can I fix it?
Another thing: When I put only comment_reply_link(); I get nothing.

Here is a screenshot.

And the code for comments.php

<div id="comentarios">
    <h6 class="titulo">Comentarios</h6>
	  <?php if($comments) : ?>
      <?php foreach($comments as $comment) : ?>  

      <div class="modulo-comentario">   <div class="div-izquierda"><img class="gravatar" src="<?php bloginfo('template_url'); ?>/imagenes/gravatar.jpg" width="80" height="80" /></div>
      <div class="comentarios-div-derecha">
  <div class="autor"><?php comment_author(); ?></div><div class="info"><?php comment_date(); ?> &bull;<?php comment_reply_link(array_merge( $args, array('reply_text' => 'Responder' ,'depth' => $depth, 'max_depth' => $args['max_depth']))) ?></div>
          <div class="comentario"><?php comment_text(); ?></div>
        </div>
      </div>
          <?php endforeach; ?>
      <?php else : ?>
      <p>No hay comentarios </p>
<?php endif; ?>  

<?php if(comments_open()) : ?>
    <?php if(get_option('comment_registration') && !$user_ID) : ?>
        <p><a href="<?php echo get_option('siteurl'); ?>/wp-login.php?redirect_to=<?php echo urlencode(get_permalink()); ?>">inicia sesi&oacute;n</a> para comentar</p><?php else : ?>
        <form action="<?php echo get_option('siteurl'); ?>/wp-comments-post.php" method="post" id="commentform">
            <?php if($user_ID) : ?>
                <p>Iniciaste ses&oacute;n como <a href="<?php echo get_option('siteurl'); ?>/wp-admin/profile.php"><?php echo $user_identity; ?></a>. <a href="<?php echo get_option('siteurl'); ?>/wp-login.php?action=logout" title="Cerrar sesión">Cerrar sesi&oacute;n.</a></p>
            <?php else : ?>
<span class="titulo">Escribí tu comentario</span>
                <input type="text" name="author" id="author" onfocus="if (this.value == 'Nombre') {this.value = '';}" onblur="if (this.value == '') {this.value = 'Nombre';}" onclick="" value="Nombre" size="22" tabindex="1" />  

                <input type="text" name="email" id="email" onfocus="if (this.value == 'Email') {this.value = '';}" onblur="if (this.value == '') {this.value = 'Email';}" value="Email" size="22" tabindex="2" />
                           <?php endif; ?>
            <p><textarea name="comment" id="comment" cols="100%" rows="10" tabindex="4" onfocus="clearContents(this);" onblur="putContents(this);">Comentario</textarea></p>
            <p><input name="submit" type="submit" id="submit" tabindex="5" value="Escribir" />
            <input type="hidden" name="comment_post_ID" value="<?php echo $id; ?>" /></p>
            <?php do_action('comment_form', $post->ID); ?>
        </form>
    <?php endif; ?>
<?php else : ?>
    <p>The comments are closed.</p>
<?php endif; ?>  

</div>
    </div>

Thanks in advance.