Rate breaks

[Idom]

Hi, I am trying to build a rate that applies different port handling costs depending on the number of equipment groups (in this case containers) in each B/L. In this particular case one shipment = 1 container. The different shipments/containers that are in the same B/L are grouped in the same job, so the bases of the rate could be "job number of primary buy shipments" The rate break costs looks something like this:

• 1 container in B/L = €74
• 2 containers in B/L = €119
• 3 containers in B/L = €160
• 4 containers in B/L = €199
• 5 containers in B/L = €231
• 8 containers in B/L = €265

I have tried several things, but nothing works. ¿Has anyone faced a similar situation or can thing on how this could be resolved?

Thank you

Idom