How to use EntityFieldQuery to get number of certain product referenced from line items purchased on a certain date range?

Hi I’ve been fiddling around with EFQ to get Commerce related data. I’ve got following code which produces result ’11’ but I’ve got no idea what it represents: $reserved = new EntityFieldQuery(); $reserved ->entityCondition(‘entity_type’, ‘commerce_line_item’, ‘=’) ->count(); It should count the number of line items?[…]