how to do an action until picture in region stays the same

Try using save() in a certain region.

Then use that save and compare it to the next, and so and etc ..

So something like :

local target = Region(856,42,40,40) --input your own region info
local ss_name = "_ss_mob_temp_.png"
local ss_val = get_values(target)
local ss_region = Region(ss_val.x - 10, ss_val.y - 10, ss_val.w + 20, ss_val.h + 20) --make region for searching slightly bigger then ss size
--
target:save(ss_name) --original picture to compare with
--now this will loop until the image does not have 90% or higher score, meaning that it has obviously changed and we exit our while loop.
while true do
--if image is there
if ss_region:exists(Pattern(ss_name)) then
print("score = " .. tostring(ss_region:getLastMatch():getScore())) --print score to show you visually, you can make them toasts if you prefer.
--if the last match in region, has a match score of 90% or higher
if ss_region:getLastMatch():getScore() >= 0.9 then
print("Image is still the same") --do something here based on if its still the same
else
print("Image has changed") --do something here based on if the imahe has changed. I use it for things like: telling if a creature has died, but not having to have original shots of every monster. this will take a pic of anything in desigated region, save it, then start comparing against it.
break
end
end
end