Need to show total task number in Inbox like previous UWL

Hi Gurus,

Custom inbox has been developed similar to BPM inbox using UI5 toolkit.

Here a new requirement is that, to display the total number of task in the box i.e., task count.

I have a piece of sample code to do this functionality , but one doubt in that code snippet is

var url = "/databinding/proxy/http/host:port/.........";

above mentioned line is that default one to get the count or what URL i am supposed to add in that.

Step by step docs or lonk also appreciated.

Thanks,

Ragav