SSRS - Call sub report to a main Report multiple time with Comma Separeted Input Parameter

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SSRS-2008

Hi,
I have a web page which a textbox where user enter invoice no. and press a show button A SSRS report is then displayed to the user which has a header like inv_no, address ,name etc and details of that invoice is show down to the header in the tabular format.,I was sucessfully able to acheive this requirment using two dataset one which

ds_header_inv_dtl parameter as @invoiceno and 
ds_detail_inv_info parameter as @invoiceno

Now the problem is that the requirement has changed , User will enter Multiple Invoice No. with comma separator and Press show report Button . same report should display as header information then details information and page break and then again header info --> details info and page break and so on.

For this I am Planning to make a blank Parent report with subreport control place on it
and planning to call this sub report multiple time with spliting comma separated invoice no.

Is it possible or please advise or guide me to acheive the above requirement.