Mounatin Mercenaries Error

22 
# Gather coins to summon soldiers and have them attack the enemy


loop:
    items = self.findItems()
    item = self.findNearest(items)
    itemPos =  item.pos
    x = itemPos.x
    y = itemPos.y
    # Move to the nearest coin.
    # Use move instead of moveXY so you can command constantly.
    self.moveXY(x, y)
    # If you have funds for a soldier, summon one.
    if self.gold > self.costOf("soldier"):
        self.summon("soldier")
    enemies = self.findEnemies()
    enemy = self.findNearest(enemies)
    if enemy:
        # Loop over all your soldiers and order them to attack.
        soldiers = self.findFriends()
        soldierIndex += 1
        soldier = soldiers[soldierIndex]
        soldierIndex += 1
        myList = [5, 6, 7]
        # Use the 'attack' command to make your soldiers attack.
        #self.command(soldier, "attack", enemy)
for soldier in soldiers: 
    self.command(soldier, "attack", enemy)

Is this right? Because it still doesn’t work