Using cache

[visualcpp]

Hi
I am trying to use the useCache property of the MassLoader
cml = new CompositeMassLoader();
cml.massLoader.useCache = true;
cml.addFile(_source,LoadableFileType.BINARY);

But it doesn't seem to load the file from the cache? is this really
load the file from the browser cache, or it just used i I make a
double download using the same CML object?

Thank you