I need a skript

[Juskittin_]

Hey i need help fixing a skript... I tried coding it myself but it hasn't worked what it is supposed to do is whenever I right-click a chest it give me 1 item out of a selection of items but whenever I try, either it doesn't give me anything or it give me two different items. If you could help me fix this that would be great thank you so much. Here is the skript. 

on right-click:
    if event-block is chest:
        chance of 30%:
            execute console command "/give %player% diamond 1"
        chance of 13%:
            execute console command "/give %player% iron_axe 1"
        chance of 20%:
            execute console command "/give %player% iron_boots 1"
        chance of 20%:
            execute console command "/give %player% iron_helmet 1"
        chance of 7%:
            execute console command "/give %player% diamond_chestplate 1"
        chance of 10%:
            execute console command "/give %player% diamond_leggings 1"

[QuickSkripts]

I know im a bit late but, I can help! The issue is that you are assigning a chance to all items. Rather, I would suggest using a if statement instead.

on right-click:
    if event-block is chest:
        send "&6You Opened A Chest"
        set {item} to a random integer from 1 to 10
        if {item} = 1:
            execute console command "/give %player% diamond 1"
        if {item} = 2:
            execute console command "/give %player% diamond 1"   
        if {item} = 3:
            execute console command "/give %player% diamond 1"
        if {item} = 4:
            execute console command "/give %player% iron_axe 1"
        if {item} = 5:
            execute console command "/give %player% iron_axe 1"
        if {item} = 6:
            execute console command "/give %player% iron_axe 1"
        if {item} = 7:
            execute console command "/give %player% iron_boots 1"
        if {item} = 8:
            execute console command "/give %player% iron_helmet 1"
        if {item} = 9:
            execute console command "/give %player% diamond_chestplate 1"
        if {item} = 10:
            execute console command "/give %player% diamond_leggings 1"