I will post a mfa soon but I'm not on my computer now.
I encountered an issue with the python object.

In a string, I pasted my python script (which creates a file).
With the substring replace object, I dynamically set the destination path of the created file.
But it seems working only when the path has a few number of folder (something like 2 or 3). When the path contains more, the file isn't create.

Maybe I'm not clear so, in waiting for a mfa, here is an example :
(I used appDir$ or appPath$ in MMF2D)

C:/folder1/file.txt --> file.txt is created
C:/folder1/folder2/folder3/folder4/file.txt --> file.txt isn't created

It's a really big problem.
Any ideas ?