No Parameter option in Class Diagram

Hi everyone,
I’m new to Visual Paradigm and since today I can’t see the usual parameter window when configuring the operation inside a class in a class diagram.
Can someone please help me? I tried searching online but I had no luck.
I’m attaching a picture hoping it helps.

Thanks again,
A.

Not all the tabs in specification dialog will be show by default. You can click drop down at the top right of the specification dialog to bring up the tabs.

Thank you. It worked.