why it is getting public virtual int function() in mvc

Question

I am doing a project in mvc, and for that I have created a stored procedure. It works fine and then I included this sp to edmx and shows sussceful. But when I opened Entities.Context.cs, instead of getting

 public virtual ObjectResult<Sp_Result> sp(),I am getting  

public virtual int Sp()

and in the EntitiesModel.cs , I need to  get  function declaration as objectResult<Sp_Result>Sp();  but it is not getting a declaration as this or as int ??

why is this happening ?? Actually I need to get as public virtual ObjectResult<Sp_Result> sp() this is not getting. 

What will be the reason behind this and is there a way to delete the stored procedure from edmx and to add later

can anyone please help me to find the solution for this ??