EnergyPlus EMS Manager override Coil flow rate

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Hi All,

I'm trying to control water flow rate of cooling coil with EMS Manager in EnergyPlus. I used EMS actuator to override the flow rate of: Controller:WaterCoil The problem is EMS did not override the flow rate, or is neglected.
Note that the Energyplus run without error and the actuator Node setpoint is available in EDD file.
The EMS I wrote is:

EnergyManagementSystem:Actuator,
CoolCoilFlowOverride,     !- Name 
VAV_1_COOLCDEMAND INLET NODE,  !- Actuated Component Unique Name 
System Node Setpoint,    !- Actuated Component Type
Mass Flow Rate Setpoint; !- Actuated Component Control Type 

EnergyManagementSystem:ProgramCallingManager,
EMSManager,              !- Name
InsideHVACSystemIterationLoop,  !- EnergyPlus Model Calling Point
FlowSPSched;                        !- Program Name 1

EnergyManagementSystem:Program,
FlowSPSched,             !- Name
SET CoolCoilFlowOverride=10,  !- Program Line 1

And the original internal controller I want to override is:

Controller:WaterCoil,
VAV_1_CoolC_Controller,  !- Name
Temperature,             !- Control Variable
Reverse,                 !- Action
Flow,                    !- Actuator Variable
VAV_1_CoolC-VAV_1_HeatCNode,  !- Sensor Node Name
VAV_1_CoolCDemand Inlet Node,  !- Actuator Node Name
Autosize,                !- Controller Convergence Tolerance {deltaC}
AUTOSIZE,                !- Maximum Actuated Flow {m3/s}
0.0;                     !- Minimum Actuated Flow {m3/s}

Thanks