# Store variable stopping my app

**URL:** <https://community.thunkable.com/t/store-variable-stopping-my-app/1528439>\
**Category:** Questions about Thunkable X\
**Created:** [September 27, 2021, 12:14am UTC](https://community.thunkable.com/t/store-variable-stopping-my-app/1528439 "2021-09-27T00:14:57Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![tatiang](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/tatiang/32/55482_2.png) [@tatiang](https://community.thunkable.com/u/tatiang)\
**Post date:** [September 27, 2021, 4:08am UTC](https://community.thunkable.com/t/store-variable-stopping-my-app/1528439/4 "2021-09-27T04:08:32Z")

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Stored variables are a little tricky because they start out with a null value. So you have to do `when screen opens` → `if stored variable = null` → `set stored variable to [some value]`. That value can be zero (0) or an empty string ("") or any other value.

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