EntityDataSource Using IN Clause On Navigation Property Collection?

Feb 28, 2011

I'm using EntityDataSource to retrieve my items, and i want to get the items for a particular region. (items and regions has a many to many relationship, thus item has a regions navigation property). and I'm using "IN" to filter the items. tried several combinations and it kept on throwing various errors. how can i get this sorted out:

Below is My DataSource:

[code]....

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