[C# CONNECT} query for item type instances to return instances inside cells

i was following this guide here

http://www.la-solutions.co.uk/content/CONNECT/DgnPlatformNet/ItemInstanceCollector.htm

but it seems like if your item type instance is on an element thats inside a cell it isnt returning that in the query.

any way to get this query to return all instances? i only see a parameter to include references.

or do i have to query all cells and search inside each cell. i have the host type set to element.