Parameterized requests are issued as GET requests, unless they are specified in a POST request entry. To specify parameterized requests, use the following format: 

"<host_name>/<endpoint_path1>/{<param_name>:<param_value>}[/<endpoint_path2>]",
host_name
(optional) is the protocol and host name components of the URL endpoint. For example, http://example.com. You can omit this value by specifying the host name using the Host Name (HostName) option.
endpoint_path
is the path component of the URL endpoint. For example, states. The value must be URL-encoded using valid syntax. For example, spaces in an endpoint are replaced with %20. See "URL-encoded values" for details.
param_name
is the parameter identifier used for filtering the request. For example, countryCode.
param_value
is the parameter value used for filtering the request during sampling. For example, USA.

For example, the following demonstrates a GET request that will map to the states table. 

#path:"http://example.com/states/get/{countryCode:USA}/all",