Hide when query parameter NOT present

I want to hide a block unless a particular query parameter is present. Is there a way to do this? I see I can hide a block when a particular query string is present. What I want is to hide the block if no query string is present in the URL.

Example:

https://mydomain.com/pagename

https://mydomeing.com/pagename/?param=123

I want the block to be hidden for the first url, and visible for the second.

• This topic was modified 8 months, 1 week ago by csdsubscriber.
• This topic was modified 8 months, 1 week ago by csdsubscriber.