Error message when using one drop down choice to filter the choices on another

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Posted on by AlanR

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Hi there, I am trying to limit the choices presented in one dropdown based on the selection in another. The functionality is working in that regard but when I open the app I get the errors below - one of each of the dropdowns I am trying to filter - does anyone know how to fix this?

Aln

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Building Power Apps

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Michael E. Gernaey 53,442 Super User 2025 Season 2 on at

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Hi

Not without seeing the actual code, can't help you.

Add photos of where this code is.

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AlanR 149 on at

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Hi FLMike, many thanks for answering - please see capture below - I hope this helps you to help me!

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dmb 12 on at

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Based on the code that you have shown, it seems that the 3rd param of the If expression is wrong. When falsy, you should return a filtered table - use the Filter formula: https://learn.microsoft.com/en-us/power-platform/power-fx/reference/function-filter-lookup

You can also wrap it with Sort for better user experiense: https://learn.microsoft.com/en-us/power-platform/power-fx/reference/function-sort

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AlanR 149 on at

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Guys, many thanks for the help. I am making some progress. I now have the app "error free" in the editor - i.e. no red "x" marks when I open the app. The filtering between the check boxes is working as I was hoping however I still get the two error messages I posted here when I open the app on my phone. I can close out the error messages and the app then functions as it should. Any ideas on what I am missing given this?

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