Ive recently created a Duct elevation tag and it works great. The only issue that i am having is that i cannot control what Level it will find to measure the elevation from. In my instance i am refering to i need it to measure the elevation from the ground floor and not level 1 since when my construction team will be in the feild the Finishe floor will not be laid out yet. attached is my elevation family i am refering to.