ENT.Touch isn't working.

[Chad Mobile]

I'm trying to use ENT.Touch in my entity and it ain't workin'
[lua]
function ENT:Touch()
if ( ent :IsValid() and ent:IsPlayer() ) then
ent:PrintMessage( HUD_PRINTCENTER, "YOU ARE TOUCHING THE MAGIC BARREL" )
end
end
[/lua]
That's what I'm using. Am I doing something wrong?

[GUNH0G]

[LUA] function ENT:Touch( ent )
if ( ent:IsValid() and ent:IsPlayer() ) then
ent:PrintMessage( HUD_PRINTCENTER, "YOU ARE TOUCHING THE MAGIC BARREL" )
end
end [/LUA]

[Chad Mobile]

Doesn't work, I ran into it, walked on it, shot it, ect and nothing happens.