I suspect the issue is with what you have set as the electrochromic layer control function. It's a function that must be input on the electrochromic tab of the window construction. It describes whether it is in the clear state, dark state, or somewhere in between.

You need to change the properties of the glass so that they reflect the reduced SHGC in the dark state, and the higher SHGC in the clear state. To do this, you will need to alter the transmittance, outside reflectance, and inside reflectance values. You can check what your resulting SHGC is in the clear and dark states by looking under "derived parameters" and toggling between "clear" and "dark".

To get the correct values, ask for data from an electrochromic glass manufacturer, or use something like the LBNL Window or Optics softwares. You need to be sure to get the correct values here so that you are not creating unreasonable results for longwave and shortwave radiation coefficients.