S        This expression returns the POST item with the given name.


If there are multiple values, this expression will return the last one.

The result will be non-URL encoded. Both + and %20 will be decoded as space.


For example, in a request for:

POST https://subdomain.example.com/folder/myfile.html

with POST values:

getkey=get%20value&getkey=get%20value2

…running this expression with parameter "getkey" will return "get value2".


Web Query Object and Get object adding POST request items.

The Download object does not support it and uses GET for downloading, and HEAD for reading the content size of URL in an expression.