Thank you, I have made some research and I have found it.
In my case:
<iframe width=”400″ height=”300″ frameborder=”0″ scrolling=”no” marginheight=”0″ marginwidth=”0″ src=”https://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=<?php if ( function_exists(‘get_custom_field_value’) ){
get_custom_field_value(‘address’, true);
} ?><?php
foreach((get_the_category()) as $category) {
echo $category->cat_name . ‘ ‘;
}
?><?php if ( function_exists(‘get_custom_field_value’) ){
get_custom_field_value(‘zip’, true);
} ?> <?php if ( function_exists(‘get_custom_field_value’) ){
get_custom_field_value(‘state’, true);
} ?>;t=m&z=14&iwloc=A&output=embed&iwloc=near”></iframe>
