Error in Create Operation In SAP UI5 Application Using SAP Odata service

Hi SAP UI5 Techie Guys,

I am newbie to SAP UI5.

I am unable to perform the create operation using SAP Odata service.

Actually I did the create operation using SAP UI5 Application by refering below link

http://scn.sap.com/community/developer-center/front-end/blog/2012/06/06/sample-ume-application-using-sapui5-and-sap-gateway--part-ii

Sample UME Application using SAPUI5 and SAP Gateway - Part IIFirst time I got the success and later on it was not working properly because of some error i.e HTTP Request failed.Even I checked in SAP backend system using debugger  when try to execute my application it did not go to debugging mode.

Could you please help me out from that issue as early as possible..

Thanks

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Sreenivas P