Dynamic multiple upload

Dear Team,

I have a problem when uploading a multiple files and these are dynamic upload means first i see the single upload control with two text box after that i add one button when i click on button second upload control add with two text box(it is html text-box added).

what i do, when i upload the files after that i read that pdf files from pdf reader code and get all text from pdf. It will work for single control data set to the these two text boxes(one is Invoice number and second is Amount from pdf reader), but when i click on add new upload control button that time i m not set values on second two text boxes. How i do please reply.