How to pass multiple value through method in RDP class (SSRS report)

Hi,

I wrote one RDP class, from that class I want ledgerAccount from Mainaccount and all InvoiceID from Inventtrans respective to that particular ledger account.

for InvoiceID I write 1 method from that I am returning the InvoiceID but in report I am getting only one InvoiceID. It should print 4 InvoiceID for particular 1 ledger account.

How can I do this... please help me