Hello. This is my first question. I’m a complete beginner and I’m quite sure my question is somehow dumb 
I’m trying to make something I was thinking simple but not for me. In my Design I have the First label (Label 1) which is populated by the Add button. The second Label (Label 2) is populated bye the slider.
I just want to substratct Label 2 to minus Label 1 and get the result in label 3.
I’m really sorry if there is already the same topic, but I’ve read a lot of topics, didn’t find what I’m trying to achieve here 
An other question, after I succeed with your help (I hope), do you think it is possible to block a user from entering a number in a lable more than once a day ? And reset this number once the day is finished ? (to allow user to enter a new number but only a day after). Here is a screen capture from the blocks screen
and here is the link to my project.: Thunkable
thank you by advance for any kind of answer you would give to me.
Is this what you are looking for?
It looks like you were really close to this answer.
I got the Blue Minus utility from the “Math” section
If it isn’t the answer, please re-word your question, and I’ll try again.
I added a few things just to get rid of some errors when the screen opens.
May I abuse a little bit
I’ve tried this afternoon to work on font color change, like positive numbers in Label 3 are green, otherwise, negative numbers are red.
This is what I’ve tried (but doesn’t work. I’m guessign this is because the initial confition is not working but I’m not sure)
Again close.
Is this what you are looking for.
If you use a stored variable, you need to initialize it.
To do that, when screen opens, if stored variable equals null, set stored variable to zero.
This is exactly what I wanted to do. Again thank you Peter. As I understand it, I did find the right solution but not in the right place As a friend says : if you’re stuck with something while coding, it is because you are not looking the right place 
So I will add a solved tag to this post.
I will try to find myself a way to prevent user from entering a max more thant once a day (and so reset it every day, but I think I understood part of this feature) and after maybe store and publish some datas.
Big thank you Peter
Hello Tatiang ans thank you for that clarification. I did find that I had to initialize it but I didn’t understand the trick with the setting 
Hello, again. Maybe I’m maybe close again (or far from it)
I did modify some features and tried to use Stored variables. I followed tutorials but I certainly don’t get something. I’ve set up a reste button, which is quite working. I have now have some minor issues :
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I want my data to be stored. It works fine for the Add smoke panel but I don’t understand how to to it for the Max Smokes panel.
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when the reset is applied and after reloading the screen, My max smokes doesn’t reset to 0 (whiwh is what aim to do), work fine for the count panel (add smokes), but not for this one.
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when reloading the panel, I now have the add smokes panel displaying the last value (before reloading) and not the max smokes panel. Therefore the remainig smokes panel displays an “NaN” value, and I was expecting it to display something like the substraction from one to the other one panel (ie : 0 for Max Smokes, and less X smokes in the remaining count). I think this problem is due to the fact the first panel (max smokes) doesn’t load a numeric value but a kind of “no value” after reloading.
Any clue ? Maybe better tutorials thant the ones I folowed ?
Telling us what isn’t working is only half of the information that anyone here needs to help you. We have to see your blocks either in screenshots or a link to your project.
What a brainless chicken I am Sorry
The worst is that I did prepare the link and a print screen but forgot to include them in my previous message… Here they are :
https://x.thunkable.com/copy/2ed209b221503a5a9a5eb42467699961
