@astrid
Remove the space between ISADORA_FLOAT_PARAM and (
So the second one ;) The first one is your example
// ISADORA_FLOAT_PARAM (noise_level, noil, 0.0, 1.0, 0.5, "This is the text that helps");
// ISADORA_FLOAT_PARAM(noise_level, noil, 0.0, 1.0, 0.5, "This is the text that helps");