Document height?

Is there a way of increasing the document height? I have converted a very long technical document from PDF to SWF which works quite well but if I wish to reduce or increase the FLA document size (over 2880px), it wouldn’t allow me. e.g. this particular document’s height is about 4400px and flash opened it without issues but if I wish to reduce the height to say 3000px… no go!

Is there a way of setting the document height that’s more than 2880 (either within Flash or any other 3rd party tool)?

Many thanks in advance.