---
title: "A survey in OpenForis Collect crashes"
url: "https://openforis.support/questions/3433/a-survey-in-openforis-collect-crashes"
tags: ["collect"]
status: "answered"
score: 0
answer_count: 1
asked: "2022-08-05T16:11:05"
last_activity: "2022-08-26T09:52:48"
source: "Open Foris Support - Q&A Forum"
license: "Copyright Open Foris, 2026. Some rights reserved under creative commons license."
---

# A survey in OpenForis Collect crashes

Asked by rpetrovska on 2022-08-05

Dear OpenForis support team,

My survey crashes several times in OpenForis Collect (desktop) although I do not have issues with the same survey before. The following error appears:

    java.lang.NumberFormatException: For input string: "false"
    at sun.misc.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:2043)
    at sun.misc.FloatingDecimal.parseDouble(FloatingDecimal.java:110)
    at java.lang.Double.parseDouble(Double.java:538)
    at org.openforis.idm.metamodel.NumberAttributeDefinition.createValue(NumberAttributeDefinition.java:58)
    at org.openforis.idm.metamodel.NumberAttributeDefinition.createValue(NumberAttributeDefinition.java:83)
    at org.openforis.idm.metamodel.NumberAttributeDefinition.createValue(NumberAttributeDefinition.java:20)
    at org.openforis.idm.model.expression.ExpressionEvaluator.evaluateAttributeValue(ExpressionEvaluator.java:69)
    at org.openforis.idm.metamodel.AttributeDefault.evaluateExpression(AttributeDefault.java:91)
    at org.openforis.idm.metamodel.AttributeDefault.evaluate(AttributeDefault.java:73)
    at org.openforis.collect.model.RecordUpdater.recalculateValue(RecordUpdater.java:1134)
    at org.openforis.collect.model.RecordUpdater.recalculateValues(RecordUpdater.java:485)
    at org.openforis.collect.model.RecordUpdater.recalculateDependentCalculatedAttributes(RecordUpdater.java:474)
    at org.openforis.collect.model.RecordUpdater.afterAttributeInsertOrUpdate(RecordUpdater.java:339)
    at org.openforis.collect.model.RecordUpdater.afterAttributeUpdate(RecordUpdater.java:326)
    at org.openforis.collect.model.RecordUpdater.updateAttribute(RecordUpdater.java:75)
    at org.openforis.collect.command.handler.UpdateAttributeCommandHandler.executeForResult(UpdateAttributeCommandHandler.java:15)
    at org.openforis.collect.command.handler.UpdateAttributeCommandHandler.executeForResult(UpdateAttributeCommandHandler.java:9)
    at org.openforis.collect.command.handler.RecordCommandHandler$1$1.execute(RecordCommandHandler.java:72)
    at org.openforis.concurrency.Worker.run(Worker.java:103)
    at org.openforis.concurrency.Job.runTask(Job.java:95)
    at org.openforis.concurrency.Job.execute(Job.java:80)
    at org.openforis.concurrency.Worker.run(Worker.java:103)
    at org.openforis.concurrency.SimpleJobManager$2.run(SimpleJobManager.java:120)
    at org.springframework.core.task.SimpleAsyncTaskExecutor$ConcurrencyThrottlingRunnable.run(SimpleAsyncTaskExecutor.java:286)
    at java.lang.Thread.run(Thread.java:748)

I hope very much you can help me to fix this problem.
Cheers, Roksolana


## Answer (score 0, by Stefano (OF) on 2022-08-26)

Link: https://openforis.support/questions/3433/a-survey-in-openforis-collect-crashes/3437

Dear Roksolana,  
Please try to check if you have defined a default value with a value "false" for a numeric value in your survey.  
We will contact you to your private email to help you solving this issue.  
Many thanks,  
Open Foris Team