hi  iused odoo 8.0 i created custom invoice report in odoo

 i access payment_term.id and payment_term.note

but i want to access all values of payment term means payment_term.line with all values in custom invoice report

i add four lines for
 

Computation  Amount To Pay  Number of Days  Day of the Month

Percent          0.250000             15                          0

Percent          0.250000             15                          0

Percent          0.250000             15                          0

Percent          0.250000             15                           0

now i want to acccess all values of payment term in custom invoice reports

same as invoice line and all fields of invoice

how can i get ,

Thanks in advanced!!!