New document defining bit depth

Hi

I'm trying to script the creation of a document and defining the bit depth based on a tick box in my UI however i keep getting en error

BitsPerChannelType.EIGHT

BitsPerChannelType.SIXTEEN

BitsPerChannelType.THIRTYTWO

all give me the same error, does this element just not work from the dom?

app.documents.add(
    1920, // Width
    1080, // Height
    72, // Resolution
    "Test Document", // Name
    NewDocumentMode.RGB, // Mode
    BitsPerChannelType.THIRTYTWO // Bit Depth
);