Similarly, if the external function you are calling has more parameters that can be accomodated with the callWith:with:... message you will need to use the callWithArray: message.
(PlatformFunctions at: 'DosBeep') callWithArray: #(440 3000).
(PlatformFunctions at: 'Beep') callWithArray: #(440 3000).
| context | context := CgDisplay default handle. (PlatformFunctions at: 'XBell') callWithArray: #(context 50).