In the following panel, we show the dependencies for the output function Ac, which appears on port A. To find this panel, click on port A and select the "Output Functions" tab.
The C function, which appears on port C, is similar and just depends on A.
In the State Definition panel (click on the object and choose "States"), the following definition is used for the AB state. To support the full bidirectionality for this state, we've enabled both the C and Ac functions.