That number is taken from wp_max_upload_size()
, and there is a filter: 'upload_size_limit'
. See wp-admin/includes/template.php
.
So this should work (not tested):
add_filter( 'upload_size_limit', 'wpse_70754_change_upload_size' );
function wpse_70754_change_upload_size()
{
return 1000 * 1024;
}
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