# AudioProcessorValueTreeState::Parameter modify steps?
**URL:** https://forum.juce.com/t/audioprocessorvaluetreestate-parameter-modify-steps/22633
**Category:** General JUCE discussion
**Created:** [May 27, 2017, 6:26pm UTC](https://forum.juce.com/t/audioprocessorvaluetreestate-parameter-modify-steps/22633 "2017-05-27T18:26:26Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@pizzafilms](https://forum.juce.com/u/pizzafilms)
#### Post date: [May 27, 2017, 6:26pm UTC](https://forum.juce.com/t/audioprocessorvaluetreestate-parameter-modify-steps/22633/1 "2017-05-27T18:26:26Z")
Is there no way to change the steps of an existing AudioProcessorValueTreeState::Parameter?
I want to give my users the choice of either continuous or stepped values for a specific parameter, but it looks like there’s no way to change the steps once it’s created. There’s a getNumSteps() method but no setNumSteps().
It would probably have to modify the range parameter of a slider attachment as well if it exists.
---
### Author:  [@pizzafilms](https://forum.juce.com/u/pizzafilms)
#### Post date: [May 29, 2017, 3:14pm UTC](https://forum.juce.com/t/audioprocessorvaluetreestate-parameter-modify-steps/22633/2 "2017-05-29T15:14:47Z")
I added this:
```
void AudioProcessorValueTreeState::setParameterRange(juce::StringRef paramID, NormalisableRangenewRange)
{
if (Parameter* p = Parameter::getParameterForID (processor, paramID))
p->range = newRange;
}
```
But I also need to modify the range of the SliderAttachment, which doesn’t look very accessible from the AudioProcessorValueTreeState. I guess I could do that separately in my editor, but it would be nice to make the change in one place. Anyone?
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### Author:  [@fr810](https://forum.juce.com/u/fr810)
#### Post date: [May 31, 2017, 2:15pm UTC](https://forum.juce.com/t/audioprocessorvaluetreestate-parameter-modify-steps/22633/3 "2017-05-31T14:15:07Z")
Wouldn’t you also need to inform the host that the number of steps of the parameter has changed? Do hosts support this?
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### Author:  [@pizzafilms](https://forum.juce.com/u/pizzafilms)
#### Post date: [May 31, 2017, 2:56pm UTC](https://forum.juce.com/t/audioprocessorvaluetreestate-parameter-modify-steps/22633/4 "2017-05-31T14:56:02Z")
I suppose so. That’s why I’m asking for this functionality to be added because I’m sure there are some things I’m missing.