removeItem() method in LazyQueryContainer.

removeItem() method in LazyQueryContainer is not working for me.I am using 1.3 version.
I can add items in LazyQueryContainer but I am not able to remove items from container.Please help me to resolve this issue.
Suppose ,I try to call container.removeItem(item) method then every time its returning true value.This is weird.
Or please suggest if there is any other way to remove items from container.
I am stuck on this issue since few days.