How I create a parameter with meta = true for AU validation pass?

Hi, Can you give me an example how I define a parameter with meta = true, i have a problem in AU validation

AudioProcessorValueTreeState::ParameterLayout myLayout;
std::make_unique (“kDelayRight”, // parameter ID
“DelayRight”, // parameter name
NormalisableRange (0.0f, 30.0f,0.1), //min, maximum value
0.0f) //default
… )

You could create a parameter type which overrides bool isMetaParameter() const to return true. Then, use that type instead of a plain AudioParameterFloat.

struct MetaAudioParameterFloat  : public AudioParameterFloat
    using AudioParameterFloat::AudioParameterFloat;
    bool isMetaParameter() const override { return true; }

Thanks reuk,
That was quick!