FTP Virtual Directory scripting to allow Write Access

Is there any way to set the "write" tag (screenshot attached) to an FTP virtual directory through the command line?

I'm trying to script adding an FTP user to AD, and create an FTP virtual directory, giving the user write access to the virtual directory.

I've got everything working except for automating the "write" access.

I don't mean using CACLS to give the physical directory write permissions, but I need it to be done for the FTP Virtual Directory.

Thanks,
FTPsite.png