Can't get signal smoke to work

[Gunfreak]

I want the smoke go off after so so many minutes(set to 30 seconds for testing)

 

I've followed this as much as possible 

Step-by-Step Instructions

1. Place the Smoke Effect:
   • Open the Effects tab on the right-hand panel.
   • Select a smoke effect (e.g., signalsmoke_red, signalsmoke_green, or a landfire effect).
   • Click on the map to place the effect.
   • Right-click the placed effect and check Linked Entity in its properties box. (This allows logic MCUs to interact with it). [1, 2, 3, 4, 5]
2. Set Up the Trigger:
   • Go to the MCU (Mission Control Units) tab and select Triggers.
   • Choose Mission Begin (to activate it right away) or a Check Zone / Timer (to trigger it conditionally). [1]
3. Add the Command:
   • Go to the MCU tab and select Command.
   • Choose Effect and place it near your smoke effect.
   • Open the Effect's properties and set the action to Start.
   • Right-click and Object Link the Command: Effect MCU to the Smoke Effect. [1, 2, 3]
4. Link Everything Together:
   • Object Link your Trigger (e.g., Mission Begin) to the Command: Effect MCU. [1]

However I can't object link timer to the command effect, only target link.

I have my timer target linked to the mission begin trigger, but no green smoke shows up after 30 seconds.