freezing an entity

Garry's Mod coding
#1

how can i freeze an entity using lua

#2

[lua]local po = ent:GetPhysicsObject()
if po and po:IsValid() then
po:EnableMotion(false)
end
[/lua]

#3

Alternatly
[lua]
ent:SetMoveType(MOVETYPE_NONE)
[/lua]

#4

thank you very much! it works now.