Use EMS to Control Cooling Tower

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I am trying to use EnergyPlus's EMS system to control the on/off operation of a cooling tower. I would like to first try turning off the cooling tower with the ID CT-A3 in April. I checked the eplus.edd file to confirm which actuators I can use, and the following is my relevant code:

EnergyManagementSystem:Actuator,
CTA3_EMS_Actuator,       !- Name
CT-A3,                   !- Actuated Component Unique Name
Plant Component CoolingTower:SingleSpeed,  !- Actuated Component Type
On/Off Supervisory;      !- Actuated Component Control Type

EnergyManagementSystem:Actuator,
CTA3Branch_EMS_Actuator, !- Name
CT-A3 CONDENSER LOOP SUPPLY SIDE BRANCH,  !- Actuated Component Unique Name
Supply Side Branch,      !- Actuated Component Type
On/Off Supervisory;      !- Actuated Component Control Type

EnergyManagementSystem:Actuator,
CTA3Pump_EMS_Actuator,   !- Name
CONDENSER LOOP_400RT-2 SUPPLY PUMP,  !- Actuated Component Unique Name
Pump,                    !- Actuated Component Type
Pump Mass Flow Rate;     !- Actuated Component Control Type

EnergyManagementSystem:ProgramCallingManager,
CTA3_EMS_CallingManager, !- Name
InsideHVACSystemIterationLoop,  !- EnergyPlus Model Calling Point
CTA3_EMSProgram;         !- Program Name 1

EnergyManagementSystem:Program,
CTA3_EMSProgram,         !- Name
IF (Month == 4),         !- Program Line 1
SET CTA3_EMS_Actuator = 0.0,  !- Program Line 2
SET CTA3Branch_EMS_Actuator = 0.0,  !- A4
SET CTA3Pump_EMS_Actuator = 0.0,  !- A5
SET EMSOperateConditionReport = 1.0,  !- A6
ELSE,                    !- A7
SET CTA3_EMS_Actuator = Null,  !- A8
SET CTA3Branch_EMS_Actuator = Null,  !- A9
SET CTA3Pump_EMS_Actuator = Null,  !- A10
SET EMSOperateConditionReport = 0.0,  !- A11
ENDIF;                   !- A12

EnergyManagementSystem:GlobalVariable,
EMSOperateConditionReport;  !- Erl Variable 1 Name

EnergyManagementSystem:GlobalVariable,
EMSOperateConditionReport;  !- Erl Variable 1 Name

I output a global variable to verify whether EMS is set up correctly. As shown in the figure, even though EMSOperateConditionReport equals 1 in April, the cooling tower still has not been turned off as configured.

I have also tried using different ProgramCallingManagers, but still haven't been able to turn off the cooling tower.

May I ask what might be causing this issue? Thank you very much for your assistance.