That was clear enough, thanks (actually it was very clear indeed)
There are many ways to accomplish your goal. Basically you have to
change your DO While loop, that does not stop at all...

One way is to eliminate the loop. Just read the first line from the 
file, put it in the label and exit. When the user click the Submit
button you rename the file, read the next line from the file,
until the end, and put it the label. You just need to make the file
handle global in the module.

Let me know,
Marco