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.
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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)
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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
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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 
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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
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