How to make returning of wood as a global action?

[soulshot]

How do I? is it a trigger? or do i have to edit it in F6 or object editor? because i tried setting their area of effect to 99k but still it doesn't set it as global, then how?

 

[Wietlol]

I assume it works with the collision size of the actual structure you return it to.
For example, a really small structure would require the worker to stand really close to its center, but a super huge structure wont allow you to stand so close to it...

If there is anything you should change then it is cast range, not area of effect.
Maybe it is the harvest ability and not the return ability.

 

[Dr Super Good]

Try giving the harvesters themselves the return ability. I would imagine they could then return to themselves.