# parameterChanged - attachment
**URL:** https://forum.juce.com/t/parameterchanged-attachment/55821
**Category:** General JUCE discussion
**Created:** [April 17, 2023, 1:27pm UTC](https://forum.juce.com/t/parameterchanged-attachment/55821 "2023-04-17T13:27:47Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Ayra](https://forum.juce.com/u/Ayra)
#### Post date: [April 17, 2023, 1:27pm UTC](https://forum.juce.com/t/parameterchanged-attachment/55821/1 "2023-04-17T13:27:47Z")
I’m working with attachments and I notice that when I connect a slider to an AudioParameter functions inside “AudioProcessorValueTreeState::Listener” are not called… is it right?
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### Author:  [@daniel](https://forum.juce.com/u/daniel)
#### Post date: [April 17, 2023, 2:29pm UTC](https://forum.juce.com/t/parameterchanged-attachment/55821/2 "2023-04-17T14:29:10Z")
ListenerLists will call ALL added Listeners, so adding an additional Listener or Attachment (which is just a ParameterListener and SliderListener) will not block the execution of the SliderAttachment. There must be something else going on, but impossible to guess with that little information.
(\*) replace Slider with Button/ComboBox/… it works the same for all Attachment classes
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### Author:  [@Ayra](https://forum.juce.com/u/Ayra)
#### Post date: [April 18, 2023, 12:34pm UTC](https://forum.juce.com/t/parameterchanged-attachment/55821/3 "2023-04-18T12:34:40Z")
You’re right… It was my mistake on other lines of code… The tiredness… 🙏 Thank you for help… ❤🙏