put action id or uniqueid on the tile and use this script
local config = {
fromPosition = {x=123,y=123,z=7},
toPosition = {x=120,y=125,z=7},
}
local pos = {x = math.random(config.fromPosition.x, config.toPosition.x), y = math.random(config.fromPosition.y, config.toPosition.y), z =...