This should work

Code (Skript):

1.  
2. function chestSummon(player: player, radius: integer):
3.     #here you get a random block
4.     set {_block} to random element out of the blocks in radius 10 around {_player}
5.     set {_block} to chest
6.     #Here is where you add the items this is just an example
7.     set slot 3 of {_block}'s inventory to diamond sword
8.     #Here is where you check if the chest has items
9.     while {_block} is a chest:
10.         if items in {_block}'s inventory isn't set:
11.             set {_block} to air
12.         wait 1 tick
13.  
14. on rightclick:
15.     chestSummon(player, 10)
16.  

Please mark as solved if this fixed ur problem
This is untested!

 

when using this i get this error
https://gyazo.com/eae8f83a9ffd655884125d6526edbabb

 

i just edited the code test now

 

still same issue with bools and text as above

 

What version of skript are u using?

 

2.1.2

 

Use 2.2

 

where can i get the 1.8 version of 2.2? the drop box link on the wiki wont load for me

 

This wont work anyways unless I'm mistaken because you're not actually choosing a random block, you're going to always be setting {_block} to true because you're only adding true to the list.

You should be setting {_blocks::%loop-block%} to loop-block's location not true

Or as pikachu pointed out in a previous post you should do this instead of loops for a random block:

Code (Skript):

1. set {_block} to random element out of the blocks in radius whatever around {_player}

 

nvm got it

 

Ok, is edited now ty

--- Double Post Merged, Jul 12, 2017, Original Post Date: Jul 12, 2017 ---

P

Pls mark as solved

 

no i mean i got the version XD

 

oh ok xD test it check the code is edited

--- Double Post Merged, Jul 12, 2017, Original Post Date: Jul 12, 2017 ---

the set to true is just to be sure that none of the blocks is repeated on the list variable

 

ok no errors this time but the chest isnt being placed at all

 

Test this

Code (Skript):

1. function chestSummon(player: player):
2.     #here you get a random block
3.     set {_block} to random element out of the blocks in radius 10 around {_player}
4.     broadcast "%{_block}%"
5.     set {_block} to chest
6.     #Here is where you add the items this is just an example
7.     set slot 3 of {_block}'s inventory to diamond sword
8.     #Here is where you check if the chest has items
9.     while {_block} is a chest:
10.         if items in {_block}'s inventory isn't set:
11.             set {_block} to air
12.         wait 1 tick
13.  
14. on rightclick:
15.     chestSummon(player)

And tell me what does the broadcast say

 

doesnt say anything

 

line 5 needs to be

Code (Skript):

1. set the block at {_block}'s location to a chest

 

nvm it suddenyly started broadcasting the blocks in the area

 

This should work

Code (Skript):

1. function chestSummon(player: player):
2.     #here you get a random block
3.     set {_block} to random element out of the blocks in radius 10 around {_player}
4.     set block at {_block} to chest
5.     #Here is where you add the items this is just an example
6.     set slot 3 of {_block}'s inventory to diamond sword
7.     #Here is where you check if the chest has items
8.     while {_block} is a chest:
9.         if items in {_block}'s inventory isn't set:
10.             set {_block} to air
11.         wait 1 tick
12.  
13. on rightclick:
14.     chestSummon(player)

--- Double Post Merged, Jul 12, 2017, Original Post Date: Jul 12, 2017 ---

Yeah i forgot to change that part