custom fields help

on the post editor page for this post, I added a custom field where
CUSTOM FIELD NAME= portfolio-image
CUSTOM FIELD VALUE= http://www.shirtsaboutnothing.com/wordpress/wp-content/uploads/site-elements/test1-sml.jpg

and on another post, I have similar values:
CUSTOM FIELD NAME= portfolio-image
CUSTOM FIELD VALUE= http://www.shirtsaboutnothing.com/wordpress/wp-content/uploads/site-elements/test2-sml.jpg

Then, in the body of the page editor for this page i have the following code towards the bottom, which I thought would spit out those images that i entered in the posts custom fields.

<h5>Recent Projects</h5>
        <div id="recent-projects">  
		<?php
            $count = 0;
            $recentblog = new WP_Query();
            $recentblog->query("showposts=3&category_name=Portfolio");
            while($recentblog->have_posts()) : $recentblog->the_post()		
        ?>        
        <?php 
        if($count==0) {
                $count++;	
        ?>
        <div class="frontpage-project-box-1">
                <a href="<?php the_permalink(); ?>"><img src="<?php $thumb = get_post_custom_values('portfolio-image'); echo $thumb[0]; ?>" alt="<?php the_title(); ?>" />
                <h4><?php the_title(); ?></h4></a>                 	
            </div>
        <?php 
            } else {
        ?>    
        <div class="frontpage-project-box">
                <a href="<?php the_permalink(); ?>"><img src="<?php $thumb = get_post_custom_values('portfolio-image'); echo $thumb[0]; ?>" alt="<?php the_title(); ?>" />
                <h4><?php the_title(); ?></h4></a>
            </div>   
        <?php 
            }
            endwhile; 
        ?> 
    	</div><!--end recent-projects-->

PHP:

but for some reason, as you can see, it is not spitting out the images on this page. I'm using the exec-php plugin so putting php code in my page editor should work.

please advise what's wrong. thanks!

 

i figured it out. just had the incorrect category name...