[rules-users] Error Loading multiple input files

Hi, I have 3 separate text files with my input data. I need to load all the input files data to my working memory and then fire the rules on this data. I am able to work with just 1 input file. But when I try to add multiple files - which I tried by adding an array of input files - my program terminates giving me a FileNotFoundException. Same problem occurs if I try to add an multiple .drl files ( different rule files). Can you guys please help me. Not understanding how to solve this error. Also, how can I add my modified data to a new file. My new file gets created and the rules which are fired do modify my data as required ( printed it on the console) But how do I store this information back to my working memory and print it out to my output file. All my input files have only 1 field in common otherwise are not related. Is it a better option to have all data in only 1 input file?? Thanks you. -M