little help pls

[IneedY]

i have a gen skript and when one player its around, drops 1 coal, if its around 2 players, drops 2 coals

i need to drop only 1 coal!

 

every 3 seconds in "main":
    loop all players:
        loop all blocks in radius 5 around loop-player:
            if loop-block is coal block:
                drop 1 coal at loop-block's position

[_Tarna_]

It would be easier to use list variables with locations in them. Every time you place a gen, add it's location to a list variable. Then every 3 seconds, loop the list variable and drop what ever you want above the loop-value. Then when someone breaks a gen, remove its location from the list variable.