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EnergyPlus: enforcing user defined fan speed through actuator

Looking through the EMS documentation, there is an actuator that I would like to use for the fan: “Fan Air Mass Flow Rate". However, I am afraid it is not making any difference when I set this in my EMS program. This actuator is for a Fan:ConstantVolume fan. I also tried an actuators for System Node Setpoints for the inlet and outlet nodes (Mass Flow Rate Setpoint). Is this not possible? Have anyone tried this?

Here is my actuator and program:

  EnergyManagementSystem:Actuator,
  PSZ2_Supply_Mass_node,    ! Name 
  PSZ-AC:2 Supply Equipment Outlet Node, ! Actuated Component Unique Name
  System Node Setpoint,     ! Actuated Component Type
  Mass Flow Rate Setpoint;  ! Actuated Component Control Type

 EnergyManagementSystem:Program,
   PSZ2_SetCoolingPower,
   SET PSZ2_Supply_Mass_node = 4.06;

I saw the following link using a schedule for the object AirTerminal:SingleDuct:Uncontrolled. Is this my only option? link text

EnergyPlus: enforcing user defined fan speed through actuator

Here is my actuator and program:

  EnergyManagementSystem:Actuator,
  PSZ2_Supply_Mass_node,    ! Name 
  PSZ-AC:2 Supply Equipment Outlet Node, ! Actuated Component Unique Name
  System Node Setpoint,     ! Actuated Component Type
  Mass Flow Rate Setpoint;  ! Actuated Component Control Type

 EnergyManagementSystem:Program,
   PSZ2_SetCoolingPower,
   SET PSZ2_Supply_Mass_node = 4.06;

I saw the following link using a schedule for the object AirTerminal:SingleDuct:Uncontrolled. Is this my only option? link text