printing the check cum payment advice with invoice no using f-58

hi friends

i am facing a problem while printing a check using f-58 through script. here i should print invoice no with invoice amount,check amount,deduction,total....

while i am posting using f-58, system automatically generated document no .but i am unable to find related invoice no and print it.

maximum 5 invoice nos will be there under one document no.

please help me out.

thanks

Shiva