API parameters noob question

Hi, I am trying to create a GET api. The request is of the format 'http://example.com/path?param1=myparam1value&param2=myparam2value'.
I do the following configuration:
URL: http://example.com/path?
and in params I use an object and create two parameters using the SET method. I define two paths: param1 and param2.
The other fields are standard.

But upon testing, I see the request which goes is 'http://example.com/path?&param1=myparam1value

The & is inserted at ? and only first parameter is sent, the other is ignored.

Can anyone help me with what is going on here?