Hi,

I am using a GroupingStore in my application and the property "lastOptions" is giving me a fit. I could not understand what it is used for using the API documentation so a simpler explanation will surely help.
How and when does it get modified?
When I do groupingStore.load() , the lastOptions gets some value and is no longer null. However, on doing groupingStore.loadData(someJsonData) , the lastOptions value is not set and returns "null". Is this expected behavior or a bug? How can i cause lastOptions to be modified on calling loadData()?