[Closed] how to load dlu gup plugins with MaxScript?

loadDllsFromDir "D:\3dsMax2009\plugins" "TreeStorm.dlo"

thanks,but this method, some problems

loadDllsFromDir "e:\\dev\\" "IPhysique.gup" 
PhysiqueOps.GetVertexBoneCount

true
– Unknown property: “GetVertexBoneCount” in undefined

http://www.maxplugins.de/r9_files/hazzard/IPhysique_max9.zip