desired: dynamic syntax for 32 bit with alpha png

    Mar 09 2006 | 7:15 pm
    Thanks to consistent help, I am inching closer to the goal.
    Attached patch is crude background subtract that saves sequence of Pngs using count to increment filenames.
    Result:PNG has a black background.
    Desired Result: transparent background.
    OS : Windows XP, Jitter 1.2.2
    I think it is simply a problem with syntax I am sending to exportimage.I am concatinating strings using sprintf and sending "exportimage filename.png png-24 lossless" How do i specify preserve alpha?
    Thanks in advance as always, Jhave //