try {
EnvelopeWidget envWidget = (EnvelopeWidget) sysexWidget;
StringBuilder envelopeValue = new StringBuilder();
Node[] nodes = envWidget.nodes;
for (int i = 0; i < nodes.length; i++) {
Node node = nodes[i];
final IParamModel modelX = getNodeParamModel(node, true);
if (modelX != null) {
int valueX = modelX.get();
envelopeValue.append(valueX).append(";");