Hi @ConRad, at the moment this is not possible. The onChange emitter is very generic and doesn’t know what changed, only that something did.
As you’re using JSON Forms with React Native this means that you have a complete own renderer set anyway. Therefore you can just add your listening logic to your bindings, e.g. you could hand over a modified handleChange prop to your renderers which also notifies your integration about the changes which are coming or were just performed.
What exactly is the use case where you need to perform additional logic on the change of an input? What are the effects of the additional logic? If it also changes other parts of the form I would usually go with a a custom renderer approach, if applicable in your case.