How to spawn a radio?? without the Spawnmenu

[TheJoy62]

Hello guys

I want to spawn the "mx_radio" without the spawn menu

I tried this code, but it's not working in the cinema gamemode... (it's working only in the sandbox)

] mx_radio
ERROR: Trying to derive entity mx_radio from non existant entity base_gmodentity!
Error: Tried to make a SENT (mx_radio) but it didn't have a 'Type' key!
Attempted to create unknown entity type mx_radio!

Here is the code:

[lua]

concommand.Add("mx_radio",function( ply )

local ent = ents.Create( "mx_radio" )
if ent:IsValid() then

ent:SetPos( Vector( 2.873410, -646.491089, 80.533295 ) )
ent:SetModel( "models/props_lab/citizenradio.mdl" )
ent:Spawn()

print("Mx Radio Spawned")
end

end)

[/lua]

[editline]3rd July 2014[/editline]

I tried copying

base_gmodentity from gamemodes/sandbox/entities/entities/ and put it into the cinema's gamemodes/cinema/entities/entities/ folder. but still not working
If anyone have any idea please :'(