Hello,
I am also having an issue trying to get these SimVars to fire
hr = SimConnect_AddToDataDefinition(hSimConnect, DEFINITION_1, "FUELSYSTEM PUMP SWITCH:1", "Bool");
hr = SimConnect_AddToDataDefinition(hSimConnect, DEFINITION_1, "FUELSYSTEM PUMP SWITCH:2", "Bool");
hr = SimConnect_AddToDataDefinition(hSimConnect, DEFINITION_1, "FUELSYSTEM PUMP SWITCH:3", "Bool");
hr = SimConnect_AddToDataDefinition(hSimConnect, DEFINITION_1, "FUELSYSTEM PUMP SWITCH:4", "Bool");
hr = SimConnect_AddToDataDefinition(hSimConnect, DEFINITION_1, "FUELSYSTEM PUMP ACTIVE:1", "Bool");
hr = SimConnect_AddToDataDefinition(hSimConnect, DEFINITION_1, "FUELSYSTEM PUMP ACTIVE:2", "Bool");
hr = SimConnect_AddToDataDefinition(hSimConnect, DEFINITION_1, "FUELSYSTEM PUMP ACTIVE:3", "Bool");
hr = SimConnect_AddToDataDefinition(hSimConnect, DEFINITION_1, "FUELSYSTEM PUMP ACTIVE:4", "Bool");
hr = SimConnect_AddToDataDefinition(hSimConnect, DEFINITION_1, "FUELSYSTEM VALVE SWITCH:1", "Bool");
hr = SimConnect_AddToDataDefinition(hSimConnect, DEFINITION_1, "FUELSYSTEM VALVE SWITCH:2", "Bool");
hr = SimConnect_AddToDataDefinition(hSimConnect, DEFINITION_1, "FUELSYSTEM VALVE SWITCH:3", "Bool");
hr = SimConnect_AddToDataDefinition(hSimConnect, DEFINITION_1, "FUELSYSTEM VALVE SWITCH:4", "Bool");
hr = SimConnect_AddToDataDefinition(hSimConnect, DEFINITION_1, "FUELSYSTEM VALVE OPEN:1", "Number");
hr = SimConnect_AddToDataDefinition(hSimConnect, DEFINITION_1, "FUELSYSTEM VALVE OPEN:2", "Number");
hr = SimConnect_AddToDataDefinition(hSimConnect, DEFINITION_1, "FUELSYSTEM VALVE OPEN:3", "Number");
hr = SimConnect_AddToDataDefinition(hSimConnect, DEFINITION_1, "FUELSYSTEM VALVE OPEN:4", "Number");
You can ignore the indexes since I am not sure if they are correct. I found them in the Boeing_Common.js because I am trying to get them to fire for the B787 since I know the overhead switches are triggering the FUEL display on the MFD. Have you managed to figure out how to get these to fire or figured out what configuration I need for a modular fuelsystem?