Export doesn't return an expected value

[lflores]

Hi, thanks alot for this tool, but I don't receive expected result when I try to export a Google Document to text plain. I only receive a false, as result.
But if I try with same id in export test tool, I received expected text.
Could you help me to solve it?

GApi.execute('drive', 'files.export', { fileId: <Google Document Id>, mimeType: 'text/plain' }).then(function (result) { console.log(result); //false value }, function (err) { console.log('Error during export', err); });

[lflores]

I have investigated the "error", and I have discovered that the answer from service, it's encoded as gzip.
I think that's the problem and I don't know how to solve it, using this api.
I both cases of tests, the answer it's same in encoding, and same encoded string.
I'm using Google API v3 and I'm loading with:
GApi.load('drive', 'v3');