Issue in Custom Payment Terms (Purchase Order Display)

Hi Experts!!

Issue in Custom Payment Terms (Purchase Order Display) I have Use FM FI_PRINT_ZTERM

with parameters

I_ZTERM                         ZXXX

I_LANGU                         EN

I_XT052U                        X

We Are getting output as

Payable in 2 partial amounts

1 installment: 80.000 %

  Payable immediately Due net

2 installment: 20.000 %

  Payable immediately Due net

But we need output as

Payable in 2 partial amounts

1 installment: 80.000 %

  Advance (Before delivery of Materials)

2 installment: 20.000 %

  After Receipt

I have created 3 payment terms

Z001 With Own Explanation - (Advance (Before delivery of Materials)

Z002 With Own Explanation - (After Receipt)

Z003 as installment payment and in OBB9 with Z001 and Z002

I am not getting Expected Output,

Can any one help me on this regards,

Thanks,

Sadeq.