How do I use Kotlin object by reflection

Let's say I need to set property A given by a String in Kotlin object O given by a String by reflection. If O was a class I could do something like this (disregard it has no sense):

fun setValue(ownerClassName: String, fieldName: String, value : Any) {
    val enclosingClass = Class.forName(ownerClassName).newInstance()
    val enclosingClassField = enclosingClass.javaClass.getDeclaredField(fieldName)
    enclosingClassField.isAccessible = true
    enclosingClassField.set(enclosingClass, value)
}

But how would I do it if O is an object?