I think you want a "for each" condition.
Click "GoldMine -> Is overlapping player"
How does that work for you?
Have try it and things get very weird:
Here is the result: caiokawasaki,com/trash/construct/002 (change the coma for a dot)
It spawn's a lot of "gold"...
Then i have tryed this:
Here is the result: caiokawasaki,com/trash/construct/003 (change the coma for a dot)
And it works, but there is a problem. Both "gold" go just to one collector, now the question is: How do i make the "gold" go for each collector?