My HTTPService requests in Flash Builder 4 are working fine for GETs but not for POSTs, where I am sending along params in addition to the name/value pairs on the query string. According to the Fiddler monitor, the header always shows a GET even when I explicitly set the method = "POST".
I step through my code and see the method being set to "POST". And if examine the variables tab in the debugger, method = "POST". But it still shows up as a GET in the Fiddler monitor.
EDIT: the parameters object I was passing was malformed. I don't know for sure, but it seems as though FB4 may be defaulting to GET under the circumstances. Need to test further.