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How can i adjust the timestep in bcvtb

I want to do co-simulation between EnergyPlus and Matlab, and I can do that without any errors.

But one trouble occurred in co-simulation, which is as below.

The data which was sented to Matlab from EnergyPlus takes two time-step until the data returns to Energyplus.

image description

As shown in attached picture, first row data of EnergyPlus is same with second row data of EP-Matlab data and third row of EP-Matlap-EnergyPlus data. where, each column names mean the exchange history.

Using current data, I want to control next time-step in EnergyPlus through Matlab.

How can i adjust the timestep in bcvtb?