Hi Swapna,
JScripts, Abap classes are involved in smartvaluehelp function.
For your requirement, maybe you have to add a value help for the field, or make some changes in standard codes. Following document is helpful in understanding of the logics of SVH:
Smart Input Help/Suggested values: http://scn.sap.com/community/crm/webclient-ui-framework/blog/2014/03/28/smart-input-help-suggested-values
best Regards, Corrine