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Why my EMS cannot change the output variable?

I'm trying to use the EMS to switch the visible transmittance(Tv) of EC windows automatically.However, the Tv has been changed,the output variable:Daylighting reference point Illumilance hasn't been any change,just is the same as as the primary.That is to say,the EMS just has changed the Tv of windows but anything.

Why my EMS cannot change the output variable?

I'm trying to use the EMS to switch the visible transmittance(Tv) of EC windows automatically.However, the Tv has been changed,the output variable:Daylighting reference point Illumilance hasn't been any change,just is the same as as the primary.That is to say,the EMS just has changed the Tv of windows but anything.

Why my EMS cannot change the output variable?

I'm trying to use the EMS to switch the visible transmittance(Tv) of EC windows automatically.However, the Tv has been changed,the output variable:Daylighting reference point Illumilance hasn't been any change,just is the same as as the primary.That is to say,the EMS just has changed the Tv of windows but anything.