# Incorrect logic for checking matches between two lists in App Inventor?

**URL:** <https://community.thunkable.com/t/incorrect-logic-for-checking-matches-between-two-lists-in-app-inventor/3423484>\
**Category:** Questions about Thunkable X\
**Created:** [December 18, 2024, 8:15pm UTC](https://community.thunkable.com/t/incorrect-logic-for-checking-matches-between-two-lists-in-app-inventor/3423484 "2024-12-18T20:15:34Z")\
**Posts on this page:** 1\
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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:** [December 18, 2024, 10:37pm UTC](https://community.thunkable.com/t/incorrect-logic-for-checking-matches-between-two-lists-in-app-inventor/3423484/3 "2024-12-18T22:37:36Z")

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When comparing two values using math symbols, both values must be numbers. Text input’s text is going to be a string so you need to convert those by adding 0 to each one.

You can see an example in the link posted here: [Feature Request - Convert Text to Number & Number to Text](https://community.thunkable.com/t/feature-request-convert-text-to-number-number-to-text/2877322)

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