To pass optional parameter in api connector through url parameters or any other method

i am trying to create a autosuggest for places,address,business through bing
to go to bing autosuggest api documentation click here
or click this:Autosuggest - Bing Maps | Microsoft Learn

i couldnt find any other way to pass the parameters except passing them inside

and it works but the problem is its not optional
i tried to pass the parameters inside <>

but it doesnt work.
is there any way to pass optional parameters…if there is pl. say