COM Server Object Properties

I have a COM server that exposes a read/write property with a parameter. Here is the IDL: [propget, id(5), helpstring("property Status")] HRESULT Status([in] BSTR bstrPhase, [out, retval] long *pVal); [propput, id(5), helpstring("property Status")] HRESULT Status([in] BSTR bstrPhase, [in] long newVal); PHP supports propget methods just fine as follows: $someValue = $settings->Status("R"); But propput methods don't compile like this: $settings->Status("R") = 1; And the built-in com_set() looks like it can't support parameters. Am I up a creek? Anyone ever used these features? They're *very* sparsely documented. :) J