How to pass Headers and x-www-form-urlencoded body in Autocannon

I'm trying to pass Headers and x-www-form-urlencoded body in Autocannon POST request, but my response is always:

0 2xx responses, 5 non 2xx responses

Example from command line:

autocannon -c 1 -a 5 -H Authorization="Bearer xxxx",Content-Type="application/x-www-form-urlencoded" -b "Key"="Value" http://host.com:8080/path

Use -H flag for each header like this : autocannon -c 1 -a 5 -H "Authorization":"Bearer xxxx" -H "Content-Type":"application/x-www-form-urlencoded" -b '{"Key"="Value"}' http://host.com:8080/path