So this is my ObjectTemplate.con for the killercages.
I have made some annotations with bold letters so it should be easier to understand.

  ------------------------------------------------------------------------------------------------
Create killercage while allies HOLD flag
- spawn for team 2

ObjectTemplate.create ObjectSpawner killercage_visible_25m_axis_spawner
ObjectTemplate.setObjectTemplate 2 killercage_visible_5m_axis
ObjectTemplate.setObjectTemplate 1
ObjectTemplate.SpawnDelay 0
ObjectTemplate.SpawnDelayAtStart 0
ObjectTemplate.TimeToLive 45
ObjectTemplate.Distance 40
ObjectTemplate.DamageWhenLost 10

and also
- spawn for team 2

ObjectTemplate.create ObjectSpawner axiskillercage25mhard_spawner
ObjectTemplate.setObjectTemplate 2 axiskillercage5mhard
ObjectTemplate.setObjectTemplate 1
ObjectTemplate.SpawnDelay 0
ObjectTemplate.SpawnDelayAtStart 0
ObjectTemplate.TimeToLive 45
ObjectTemplate.Distance 40
ObjectTemplate.DamageWhenLost 10

and at the same time:
Remove killercage while axis CAPTURE flag
- spawn for team 1

ObjectTemplate.create ObjectSpawner killercage_removeraxis_spawner
ObjectTemplate.setObjectTemplate 2
ObjectTemplate.setObjectTemplate 1 killercage_removeraxis
ObjectTemplate.SpawnDelay 0
ObjectTemplate.SpawnDelayAtStart 0
ObjectTemplate.TimeToLive 45
ObjectTemplate.Distance 40
ObjectTemplate.DamageWhenLost 10

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Now we mirror the above stuff:

------------------------------------------------------------------------------------------------

Create killercage while axis HOLD flag
- spawn for team 1

ObjectTemplate.create ObjectSpawner killercagevisible_eagles_nest_allies_spawner
ObjectTemplate.setObjectTemplate 2
ObjectTemplate.setObjectTemplate 1 killercage_visible_25m_allies
ObjectTemplate.SpawnDelay 0
ObjectTemplate.SpawnDelayAtStart 0
ObjectTemplate.TimeToLive 45
ObjectTemplate.Distance 40
ObjectTemplate.DamageWhenLost 10

and also
- spawn for team 1

ObjectTemplate.create ObjectSpawner allieskillercage25mhard_spawner
ObjectTemplate.setObjectTemplate 2
ObjectTemplate.setObjectTemplate 1 allieskillercage5mhard
ObjectTemplate.SpawnDelay 0
ObjectTemplate.SpawnDelayAtStart 0
ObjectTemplate.TimeToLive 45
ObjectTemplate.Distance 40
ObjectTemplate.DamageWhenLost 10

and again at the same time:
Remove killercage while allies CAPTURE flag
- spawn for team 2

ObjectTemplate.create ObjectSpawner killercage_removerallies_spawner
ObjectTemplate.setObjectTemplate 2 killercage_removerallies
ObjectTemplate.setObjectTemplate 1
ObjectTemplate.SpawnDelay 0
ObjectTemplate.SpawnDelayAtStart 0
ObjectTemplate.TimeToLive 45
ObjectTemplate.Distance 40
ObjectTemplate.DamageWhenLost 10

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Don't get confused with the exact names of the templates... I have copied them from Alpenfestung.
It literally took me hours to completely understand this mess.
In my opinion it's really hard to explain that to somebody...

All you have to know is that

- a killercage_visible is not a real killercage. It just shows the player where the cage is ( blockades + barbwire ).

- the killercagehard is the real killer. When an ENEMY player touches it he immediately
dies. It does not block the player; it kills him. But the team of this
cage is allowed to enter it. It should be used along with
the killercage_visible

- the killercage_remover has only one purpose. It simply deletes the two above mentioned objects
so that the axis team for example can proceed to the 2nd flag after the
1st is captured and secured.

The three objects must be placed where the flagpole is. All three are stacked together or
just reeaaaly close to each other in order to make the whole system
work. Of course the real killercage is more important than the visible
cage. There mustn't be spawn delay on these objects.
As you can see in my code list, I have written the templates in two seperated blocks. It's easier to understand what to do.

An example
- Allied team holds the 1st flag.
- So the 1st flag spawns axis_killercages where the 2nd flag is. Axis have to attack the 1st flag so the killercages on the 2nd disappear.
- Axis capture the 1st flag and this happens: It doesn't spawn any axis_killercages anymore on the 2nd flag. The template of the removeraxis activates and deletes both cages immediately at the 2nd flag.
- The removeraxis is activated as long as axis team holds the 1st flag. If allies
recapture it the remover disappeares and the 1st flag again will spawn axis_killercages at the 2nd flag.
- As you can see all these objects of the 1st flag spawn at the 2nd flagpole; so it works.

To create the above mentioned scenario you simply have to make use of the first half of my code I provided at the beginning of this post.

Now imagine: When axis team also manage to capture the 2nd flag what will happen there?
The 2nd flag will spawn an allies_killercage at the 1st flag in order to prevent allies to recapture it.
If allies get the 2nd flag back their removerallies will delete the allies_killercage at the 1st flag which has spawned for axis. Now allies can also recapture the 1st flag back.

If you want to make this happen you have to make use of the second half of my code.

If you want to create a pushmap with both scenarios, of course you must use the whole code.

I see no reason to present you my ObjectSpawns.con and the
ControlPoints.con since both have nothing to do with the pushmap system.

I repeat: In order to make all this shit work you have to place the three items at the correct position. The correct position of
course is the flag pole where you want to do something ( create cages
vs. remove cages ).

I recommend you to try it out.