Pass excel as an input file to a value prompt in report studio

Hi ,
There is this requirement where in we need to pass an excel file containing item_codes captured by a set of users. These item_codes are present in the database as well.But different users across different regions want to pass these item codes from the excel sheet to a value prompt in the report studio.Can this be done using Javascript ?? If so please help!!!

for example the excel file which the value prompt must filter values such as —> 234,678,567,346,345 etc … 5000 item codes

Thanks for your help in advance