This function was removed from the Gateway entirely as it is potentially harmful. It is only present in Gateway versions 7.9.0 - 7.9.3. It is not present in any prior or later versions of Ignition. This function is replaced by system.util.sendRequest() , which is much more secure and was introduced in 7.9.3. If you are using this function, it is highly recommended that you upgrade to at least 7.9.3 and use system.util.sendRequest() instead.
Invokes a function on the gateway. It will return the return value of the function, or throw an exception if something went wrong calling that function.
String function - The function name.
PyObjects args - Any number of args to send to the function in a list.
Object return - The return from the function that was passed in.