Gradebook percentage in moodle

Hi,

I am testing articulate products. Now I have a problem about creating a scorm package with articulate presenter.

I have used this configuration in publish menu of presenter:

- SCORM 1.2 package

- Tracking of slides viewed

I have imported the zipped scorm in moodle and alls ok except the percentage in gradebook. If a have a scorm with a 10 slides and a student have viewed 6 slides, the gradebook don't show 60%, the gradebook shows empty column of percentage. The percentage column only shows the percentage of activitys fully completed, that is 100%

What is the problem?

Exists a tutorial/configuration that explains how publish a scorm from articulate presenter to moodle?

Maybe is a problem of moodle configuration?

I hope somebody can help me.

Thanks in advance and sorry for my poor english.