How do you attach an assembly to a Data Adapter?

Hello, I am trying to use the new menu component within dashboards. I tried using method for command type and entering in the assembly file name for the business rule. However, when doing so it returns an error message that it is invalid. I am wondering what the correct syntax is for using an assembly file within a data adapter as well as the correct method type.

I currently have it as follows

{BusinessRule}{DataSet}

or

{Workspace.WorkspaceName.AssemblyName.FileName}{DataSet}