BeamAndSlabNewParameter.dll 4918f2e4-b94a-4511-aa25-78c8c16cb7fc Revit.SDK.Samples.BeamAndSlabNewParameter.CS.Command Beam and slab parameter Add a new GUID parameter to beam and slab, and use the GUID value to find the right element. AlwaysVisible ADSK Autodesk, www.autodesk.com