Not yet, I tried many solutions but didn't worked.  I think it has some kind of restriction for the access of classes in packing slip. I tried the customization for the total of slip and it worked, but this is not working.

Hey guys!Maybe someone of you can help me with the below questions about the customization of the packing slip template.I wanted to add the tracking number of that particular order on the packing slip.I am trying to add below code to add the tracking...