GetParameterValuebyName - blank values

Hi, when I tried to get the b and h values of the elements using GetParameterValueByName node, it returned blank values, although there are values associated with the parameter names b and h. Does anyone know where are the problems? Thanks!

You are trying to access Type Parameters which work off an element’s Symbol or Type. You must feed Element.ElementType into the Element input instead of just the Element.

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Thanks! @Dynamonkey