Pretty sure Element.SetParameterByName can work if the input is a familytype instead of element.
Also, try searching this forum for change familytype parameters. This thread solves it with the above mentioned method: Set Type Parameter
Pretty sure Element.SetParameterByName can work if the input is a familytype instead of element.
Also, try searching this forum for change familytype parameters. This thread solves it with the above mentioned method: Set Type Parameter