Troubleshooting Serper.dev API Dynamic Query Connection Issue

Hi All — wondering if you might help me figure out an issue I’m having with serper.dev api connection. So, I”ve been able to figure out how to connect to serper.dev and run a hard coded query. (see image). This connects cleanly and gives me 30 results in a json packet. When I try to make the query dynamic, however — by trying to have the query reference the country value in a row (see image), I get the error: ‘failed to parse body input’