AR Invoice Single Line Multipal Distribution

Dear All

As per the current business case  client want to multiple distribution  for single line in AR Invoice,

Test Case

Line Description                  Line Amount                              Dist.Amount

TEST1                                  550                                              450

                                                                                                 100

For the achieve above case using the api (ar_invoice_api_pub.create_single_invoice) , for the single line its working fine , but when i am loading the invoice having the number of line with multiple distribution, that time multiple distribution create for the last line. 

Thanks in advance