update infotext of treasure chests

show_reward_fs.lua

@@ -1,7 +1,3 @@
-
--- TODO: update infotext of a chest when assigning a treasure -- meta:set_string("infotext", "Locked Chest")
-
-
 -- who is allowed to edit and create new reward inventories?
 -- works with player object and player name
 reward_inv.may_edit = function(pname)
@@ -70,6 +66,8 @@ reward_inv.input_handler = function(player, formname, fields)
 	if(reward_inv.clicked_at_chest[pname]) then
 		local meta = minetest.get_meta(reward_inv.clicked_at_chest[pname])
 		meta:set_string("reward_id", reward_id)
+		-- update infotext as well
+		meta:set_string("infotext", "Treasure chest")
 	end
 
 	-- the player is working on this reward and editing it (until the Store button is clicked)