Error in package ID calculation in Rate.php

[mgcobblestone]

Hi,
There appears to be an error in the logic that generates the package IDs in Rate.php

Line 75 should read:

$packageId = $id !== null ? $id : ((count($this->packages['Package']) + 1));

instead of

$packageId = $id !== null ? $id : ((count($this->packages) + 1));

Currently, for shipments containing more than 2 packages, everything after the 2nd package gets an ID of 2.