FAQ: I want to perform my own input validation and display a message based on the results
## Answer
Please use "[Script](/en/manual/table-management-script)".
---
## Overview
If you want to perform your input validation in "[Script](/en/manual/table-management-script)", please implement your input validation and result message display process in [$p.events.before_validate](/en/manual/script-events-before-validate) of the event firing script.
## Operation Procedure
1. Please enable the Number A item from the Editor tab.
1. Create a new "[Script](/en/manual/table-management-script)", write the script's contents below, and check "Edit" for the output destination to update.
1. Create a new record, enter a blank or a value other than 100 in Number A on the editing screen, and press the "Update" button.
### Execution Result
## Sample Code
##### JavaScript
```
$p.events.before_validate_Update = function (args) {
var myNumA = $p.getControl('NumA').val()
if (myNumA == "") {
$p.clearMessage();
$p.setMessage('#Message', JSON.stringify({
Css: 'alert-warning',
Text: 'No value entered. Please enter a number.'
}));
return false; //If false, processing stops and no update occurs
} else if (myNumA != 100) {
$p.clearMessage();
$p.setMessage('#Message', JSON.stringify({
Css: 'alert-error',
Text: 'Please enter the number 100.'
}));
return false; //If false, processing stops and the value is not updated
} else {
return true; //If true, the value is updated
}
}
````
## Related Information
<div id="ManualList"><ul><li><a href="/en/manual/table-management-script">Table Management: Script</a><span>08.13.2024 up</span></li></ul></article></div><input id="SearchTextHidden" type="hidden" value="" />
