Change image / thumbnail sizes in child theme does not overwrite Enfold

Hi there,

we made a change of image sizes for the blog posts (markd in strong):
$avia_config[‘imgSize’][‘widget’] = array(‘width’=>36, ‘height’=>36); // small preview pics eg sidebar news
$avia_config[‘imgSize’][‘square’] = array(‘width’=>180, ‘height’=>180); // small image for blogs
$avia_config[‘imgSize’][‘featured’] = array(‘width’=>1500, ‘height’=>430 ); // images for fullsize pages and fullsize slider
$avia_config[‘imgSize’][‘featured_large’] = array(‘width’=>1500, ‘height’=>630 ); // images for fullsize pages and fullsize slider
$avia_config[‘imgSize’][‘extra_large’] = array(‘width’=>1500, ‘height’=>1500 , ‘crop’ => false); // images for fullscrren slider
$avia_config[‘imgSize’][‘portfolio’] = array(‘width’=>495, ‘height’=>400 ); // images for portfolio entries (2,3 column)
$avia_config[‘imgSize’][‘portfolio_small’] = array(‘width’=>260, ‘height’=>185 ); // images for portfolio 4 columns
$avia_config[‘imgSize’][‘gallery’] = array(‘width’=>845, ‘height’=>684 ); // images for portfolio entries (2,3 column)
$avia_config[‘imgSize’][‘magazine’] = array(‘width’=>710, ‘height’=>375 ); // images for magazines
$avia_config[‘imgSize’][‘masonry’] = array(‘width’=>705, ‘height’=>705 , ‘crop’ => false); // images for fullscreen masonry
$avia_config[‘imgSize’][‘entry_with_sidebar’] = array(‘width’=>845, ‘height’=>442); // big images for blog and page entries
$avia_config[‘imgSize’][‘entry_without_sidebar’]= array(‘width’=>1210, ‘height’=>423 ); // images for fullsize pages and fullsize slider
$avia_config[‘imgSize’] = apply_filters(‘avf_modify_thumb_size’, $avia_config[‘imgSize’]);

We added this to functions.php of the child theme, but it does not overwrite the functions.php of Enfold. Of course, with the update this was lost. It is still in the child theme and does not apply. As soon as I change it in Enfold, it works.

Can you please give me a suggestion, how I can put this change of the image size to my child theme?

Thanks in advance.
Kati