How can you make every unit on the map invulnerable, then make 4 units vulnerable?

[FriXionX]

Exactly what the title says, i want every unit to be invulnerable for (amount of time) then 4 units to get vulnerable. Or leave out the 4 units, and just make everyone else invulnerable. I cant find out how to do this.
I was thinking of making a group variable, putting the 4 units in, making everyone invuln, then making the 4 units vulnerable. But nooo apparently you cant do that >.>

 

[graystuff111]

• Untitled Trigger 001
  • Events
  • Conditions
  • Actions
    • Set TempGroup = (Units in (Playable map area))
    • Unit Group - Pick every unit in TempGroup and do (Actions)
      • Loop - Actions
        • Unit - Make (Picked unit) Invulnerable
    • Unit Group - Pick every unit in (Random 4 units from TempGroup) and do (Actions)
      • Loop - Actions
        • Unit - Make (Picked unit) Vulnerable
    • Custom script: call DestroyGroup(udg_TempGroup)

 

[Ham Ham]

Events: Your Events

Actions:
Unit Group - Pick every unit in playable map area and do multiple actions
- Make Picked Unit invulerable.
Unit Group - Pikc Random 4 units in playable map area and do multiple actions
- Make Picked Unit invulnerable.


EDIT: Well, this or as graystuff111 said. ITs just the same thing.

 

[wolfman]

Or you could add all the units in the map to a group, then remove the units that should be vulnerable from that group and make the units in the group invulnerable. Then just wait for however long you want and pick the units in the group and make em vulnerable again.

 

[FriXionX]

Oooh thank you, i totally forgot about that
+rep to all
Solved! (really quickly aswell, didnt expect an answer for ages xD)