Change Picture Size in a our Format for Picture Slider?

Hi,

i want a own 3:2 Picture Size for my Slider Gallery, with 735 x 490px. I change the value in the function.php at “magazine”.

`line 107 $avia_config[‘imgSize’][‘magazine’] = array(‘width’=>735, ‘height’=>490 ); // images for magazines

The new value is visible in the Gallery, but the pictures looks in the format as before.
What should i do?

Best Regards

Daniel