无法使用ADO.NET Entity Framework执行存储过程

I've created a simple parameterless stored procedure which I've pasted below. I've imported the stored procedure to my Entity Model and created a Function Import. The function in the model is never created and I am unable to execute this stored procedure using the ADO.NET Entity Framework. I've opened the .edmx file in XML view and have confirmed there are no errors regarding this stored procedure. What am I doing wrong? Is it really impossible to call such a simple stored procedure from the Entity Framework? I've set the return type for the import function to None seeing this stored procedure does not need to return any recordsets or values.I've created a simple parameterless stored proc