Using ItemService.FilterItems() with non-string fields

[Andarki]

When calling ItemService.FilterItems() for string fields this works:

Dictionary<string, string> filters = new Dictionary<string, string>() { { "title", "Support" } };                
PodioCollection<Item> items = client.ItemService.FilterItems(MyApp.AppId.Value, 100, 0, filters);

When attempting to do the same on the enumerated field 'status':

Dictionary<string, string> filters = new Dictionary<string, string>() { { "status", "Active" } };

The error Invalid value "Active" (string): must be array is thrown by the API.
I have been experimenting using PodioRestHelper.JSONRequest (as done internally by FilterItems) and got the following code to work (2 is the Enumerator id for 'Active'). Note that Podio API insists that status must be an array.

Dictionary<string, object> filter = new Dictionary<string, object>() { 
{ "status", new object[] { 2 } }
};

var requestData = new {filters = filter};

var request = PodioRestHelper.JSONRequest<PodioCollection<Item>>(Constants.PODIOAPI_BASEURL + "/item/app/" + MyApp.AppId.Value + "/filter/", client.AuthInfo.AccessToken, requestData, PodioRestHelper.RequestMethod.POST).Data;

I suggest that ItemService.FilterItems() should accept a Dictionary<string, object> to enable this use case. Furthermore, the method should have a comment on how to invoke it for different datatypes (string, enum, int etc.)

[Andarki]

And here is an example for querying integers

Dictionary<string, object> filter = new Dictionary<string, object>() { 
{ "priority", new {to = 4, from=4} }
};

I will begin implementing this and create a Pull Request when ready. Most likely using Anonymous Types in favor of the Dictionary.