# CannotTrackChangeCallback Function

> Callback function that provides data for the CannotTrackChange event. (see also TXTextControl.addEventListener function)

- **Product:** DS Server
- **Section:** Reference
- **Kind:** Function
- **Introduced:** 28.0
- **Path:** DS Server > Reference > JavaScript API > CannotTrackChangeCallback Function
- **Web URL:** https://docs.textcontrol.com/ds-server/reference/javascript/cannottrackchangecallback/
- **LLMs URL:** https://docs.textcontrol.com/ds-server/reference/javascript/cannottrackchangecallback/llms.txt
- **LLMs-Full URL:** https://docs.textcontrol.com/ds-server/reference/javascript/cannottrackchangecallback/llms-full.txt

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## On This Page

- [Description](https://docs.textcontrol.com/ds-server/reference/javascript/cannottrackchangecallback/#description)
- [Syntax](https://docs.textcontrol.com/ds-server/reference/javascript/cannottrackchangecallback/#syntax)
- [Examples](https://docs.textcontrol.com/ds-server/reference/javascript/cannottrackchangecallback/#examples)

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## Nearby

- **Previous:** [Javascript: BarcodeTypeSettings.setShowCheckValue Method](https://docs.textcontrol.com/ds-server/reference/javascript/barcodetypesettings/setshowcheckvalue-method/llms.txt)
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