Run a shared Keyword test in different projects with different parameters

I have the functionality to import an excel sheet (File A) in one of my project (Project A).  I am using this same functionality in a different project (project B) using a 'shared keyword test'.  When running project B I want to use a different Excel File (File B) in that shared Keyword test. 

I created two parameters 'Excel A' and 'Excel B'. But the problem is, every time I change the parameter in one of my projects the other one is also getting updated with the file. 

I should be able to run the entire project suite using Parameter Excel A in one project and parameter Excel B in the other project.

Let me know your thoughts.