How to add Custom Export Column with img data(woocommerce)

Hi!
How to add Custom field with image data to Export Column Woocommerce
Custom field made by ACF(Advanced Custom Fields). Type of field – image.

I create custom field and add to Woocommerce export.
function add_export_column( $mycolumns ) {
$mycolumns[‘mycustom_column’] = ‘myimg’;
return $mycolumns;
}
add_filter( ‘woocommerce_product_export_column_names’, ‘add_export_column’ );
add_filter( ‘woocommerce_product_export_product_default_columns’, ‘add_export_column’ );

But my image data is not add to csv file. CSV created without img data.
How to add img data to csv file?

Thanks!