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Is it possible to use EMS to change the construction of the shade?

Hi there,

I am wondering if it is possible o use EMS to alter the shade construction?

I can define a window with shade construction in the window control object, but it appears that I am unable to modify this construction by EMS once it is set.

I was thinking about instead of window shade control, I just assign the construction with shade to the window surface and then use EMS to dynamically change window construction. However, this failed also because "Window must not directly reference a Construction with a shading device. Use WindowShadingControl to specify a shading device for a window."

I am quite stuck here because I cannot think other alternatives.

Does anyone know how to get around this? If not, any anyone know what are the equivalent solutions?