WPdonations: edit available donations amounts

gistfile1.php

add_filter( 'donation_available_amounts', 'my_custom_amounts' );

function my_custom_amounts() {
	$options = array( 
				'5' => '5',
				'10' => '10',
				'20' => '20',
				'30' => '30',
				'40' => '40',
				'50' => '50'
			);
	return $options;
}