Yes I'm having separate Object studio with Application Modeller for Save as window but it's throwing error like "saplogon" not attached which means parent SAP application not connected.Hello,
You need a separate object/application modeller to interact with the Save As window.
This new object should have the Application Modeller Wizard configured to attach to a running instance and it's Windows Application.
Then you need to specify the Window Name: Save As and you should be able to spy.