construct.SetPhysProp



construct.SetPhysProp( self:GetOwner(), Ent, Bone, nil,  { GravityToggle = gravity, Material = material } ) 


Is there more params/varibles than these 2? (GravityToggle and Material)
The script is from physprop.lua

Try using this: http://www.facepunch.com/showthread.php?t=884409