I cannot tell Applescript to do this block of code

This is a python function.

The javascript works fine on it's own, I can run it as a unique script, but this needs to fit into a bunch of other stuff that I've done.

I'm calling it via osascript, and I have another function that works perfectly fine.

And like I said, this block of code runs perfectly fine on it's own and does exactly what I want. I've tried it with #target illustrator and without, same result.

    def _javascriptCreateCMYK(self):

        js = '''

        var SVGDoc = app.activeDocument;

        var newDocPreset = new DocumentPreset;

        newDocPreset.title = ("My Doc");

        newDocPreset.width = (1920);

        newDocPreset.height = (1080);

        newDocPreset.units = RulerUnits.Pixels;

        newDocPreset.colorMode = DocumentColorSpace.CMYK;

        var finalDoc = app.documents.addDocument(DocumentColorSpace.CMYK, newDocPreset);

        SVGDoc.activate();

        SVGDoc.selectObjectsOnActiveArtboard();

        app.copy();

        finalDoc.activate();

        app.paste();

        SVGDoc.activate();

        app.activeDocument.close(SaveOptions.DONOTSAVECHANGES);

        finalDoc.activate();

        '''

        return js

And this is the Applescript that runs via a shell process.

        script = '''

        on run

            tell application "%s"

                set aiOpen to "%s" as POSIX file

                activate

                open aiOpen

                activate

                set js to "%s"

                do javascript js               

                set newjs to "%s"

                do javascript newjs               

            end tell

        end run''' % (aiVersion, svgFile, js, newjs)