Paint Shop Pro :: Resizing Images Via Batch Process?

I frequently use a script to resize .jpgs from 3600x3600 to 1000x1000 dpi to save space on my hard drive. After resizing 300+ .jpgs last night, I found that they all retained their original file size. An image that started out as 3600x3600 dpi with a file size such as 3.5mb that was resized to 1000x1000 dpi using the script in X4 still had a file size of 3.5mb when it should have been considerably smaller than 1mb. I relaunched the application and rebooted my computer but no change. To fix the problem I had to run the .jpgs thru the batch process again using the same script but in X3.

The script I was using was created in X3 so I tried creating an identical script in X4. Regardless of which script I used in the X4 batch process, the same thing happened.

This problem seems to be unique to the script and/or batch process. I can open a .jpg file in X4, resize it from 3600x3600 to 1000x1000 dpi, save the changes, and the file size changes accordingly.