[otrs] Close all Tickets from a list of Customer ID's

Hi All, I need to close all open tickets for a range of 200 customer ID's I have. I am trying to do this using generic agent but when I do this and input more than one customer ID using commas it finds no tickets. It finds them if I put them in one by one but it's a very long drawn out process doing it this way. Is there a quicker way? Thanks Justin