# Problem with initialize variable! **URL:** \ **Category:** Questions about Thunkable X\ **Created:** [May 21, 2020, 11:11am UTC](https://community.thunkable.com/t/problem-with-initialize-variable/582206 "2020-05-21T11:11:34Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![altsoftcode](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/altsoftcode/32/62708_2.png) [@altsoftcode](https://community.thunkable.com/u/altsoftcode)\ **Post date:** [May 21, 2020, 11:11am UTC](https://community.thunkable.com/t/problem-with-initialize-variable/582206/1 "2020-05-21T11:11:34Z")
I am having problems when initialize a variable setting value. I set the variable with “initialize app variable” and set the value. Then when i do “when screen starts” i try to use the variable and is undefined!!! Everything was working. I already have an APP created from the same project. But today i was going to test and there was an error, thats when i discover that the error was that the variable was undefined…and it happened without a reason! Anyone with the same problem? Please help me. Thank you. ---
**Author:** ![domhnallohanlon](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/domhnallohanlon/32/29554_2.png) [@domhnallohanlon](https://community.thunkable.com/u/domhnallohanlon)\ **Post date:** [May 21, 2020, 11:52am UTC](https://community.thunkable.com/t/problem-with-initialize-variable/582206/2 "2020-05-21T11:52:08Z")
> [@altsoftcode](#): > > Then when i do “when screen starts” i try to use the variable and is undefined!!! Hey @altsoftcode - can you share a screenshot of the blocks you are using? Have you considered using the logic blocks to handle what happens if the value from a variable is undefined? ---
**Author:** ![altsoftcode](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/altsoftcode/32/62708_2.png) [@altsoftcode](https://community.thunkable.com/u/altsoftcode)\ **Post date:** [May 21, 2020, 12:00pm UTC](https://community.thunkable.com/t/problem-with-initialize-variable/582206/3 "2020-05-21T12:00:27Z")
Thank you @domhnallohanlon for your answer. There is not much to share. It is a normal procedure as described here: [https://docs.thunkable.com/variables](https://docs.thunkable.com/variables) I decided to create stored variables, cause it worked, but this means that i have to change everything i made until now. I think it is a problem in thunkable. I tested in two devices and is the same problem. As i said everything was working great until today and i am talking about months of work. If you want you can try to set an app variable and then when screen starts alert the value. Thank you very much. ---
**Author:** ![domhnallohanlon](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/domhnallohanlon/32/29554_2.png) [@domhnallohanlon](https://community.thunkable.com/u/domhnallohanlon)\ **Post date:** [May 21, 2020, 12:04pm UTC](https://community.thunkable.com/t/problem-with-initialize-variable/582206/4 "2020-05-21T12:04:38Z")
> [@altsoftcode](#): > > but this means that i have to change everything i made until now. If you just change the variable type from `app` to `stored` then everything will be updated automatically. There are no other changes needed. > [@altsoftcode](#): > > I think it is a problem in thunkable It might be? If you share a screenshot thought you will help us establish whether it actually is or not. Also, > [@domhnallohanlon](#): > > Have you considered using the logic blocks to handle what happens if the value from a variable is undefined? Thanks! ---
**Author:** ![ioannis](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/ioannis/32/146956_2.png) [@ioannis](https://community.thunkable.com/u/ioannis)\ **Post date:** [November 8, 2024, 11:29am UTC](https://community.thunkable.com/t/problem-with-initialize-variable/582206/5 "2024-11-08T11:29:06Z")