Loot Tables Not Working (They Are Repeating The Loot)

I have created a loot table in mcreator of the chest and added my items. Then created my structure and by this command 

/give @s chest{BlockEntityTag:{LootTable:"rks_mobs:chests/rockmonumentloottable"}}

then I got the loot table chest and it works perfectly fine but when I put the chest on the structure and saved it and then created my structure then I was getting the same loot on every structure the loot was not changing plz help what can I do?

and here's the loot table code: https://pastebin.com/svFw2Mpx

here's the structure code: https://pastebin.com/tJ8KrsR5

here's the second code: https://pastebin.com/2dwS0udD

and here's the link to the structure file plz help - https://www.mediafire.com/file/w4jej5oonwr7dks/rockmonument.nbt/file