Hey Dan! Thank you very much for your reply!
The sections are not built with some authoring tool, they are built manually (html, javascript etc), apart from the end of course quiz that is built in storyline. Then everything is packaged together using Reload.
The thing is that this package is working on Blackboard which reports it as complete only if the user has attempted the quiz (there is an option in Blackboard, mark the course as complete when threshold score is met under edit the SCORM behavior). But I cannot find this option in Moodle. So I dont think that it's the package that causes a problem.
Where does Moodle offer me this option? To mark it as complete when the user has attempted only one SCO inside this multi-SCO package?
Thank you very much!