I am using Commerce Shipping and Commerce Flat Rate. I have set up two shipping services for which I am using rules to calculate two different shipping prices (one per shipping service). In the calculation rule for each shipping service I should set two conditions:
1. the first checking wheter the line item is of shipping type and this works;
2. the second condition should be checking the shipping service, when I set up a data comparison and select "commerce-line-item:commerce-shipping-service" as data to compare, below the data value to compare is rendered as a drop list but without any values in the list. So I am not able to complete the condition.

Any suggestion. I have checked the issue ques for both Shipping and Flat rate but didn't find anything referencing to this kind of problem.

Thanks!