Autoinvoice - Distributions Value

Hi,

We are trying to create a invoice by pushing multiple lines in autoinvoice and distributions. For the REV lines, the interface lines context and line attributes 1-15 in the distributions_all should match the corresponding values in lines_all. However what values should we pass in the REC as for the REC we can only pass a single line in distributions_all? Or is there a way where we can pass multiple distributions for REC in distributions_all? If we can, what value should we pass in the amount/percentage field.

Regards,

Vishwesh