Memory leak in PP11

Hi,
I have a prog which reads a text from a file and writes it in a .JPG picture.
Checking at the same time the available memory, I see that after repeating this operation 80 times, memory goes down by 20MB.
But I must repeat this operation 1000 times and I have 100MB only available.
I'm using PP11.
My prog looks like this:

'Original picture is already in memory.
CorelScript.EditCopy   'Copy it
   CorelScript.EditPasteDocument   'create new document
   Line Input #1, text
   WriteIntoPicture(text)
   NameFile=f(text)
   CorelScript.FileSave NameFile, cdrJPEG, 3
   CorelScript.FileClose
Loop

(I'm sorry I haven't been able to find "clean" VBA instructions and had to call CorelScript)
Note that the .JPG picture has 12KB only (380KB uncompressed in memory)
I 've seen that Alex suggested time ago to a similar problem to add following line:
Application.Optimization=true
but this is rejected as an error as it is not a valid Application method.
Anyone can help me to solve this memory leak?
Thanks
Horst