1- check node attribute
2- execute here after code
3- check the node attribute again
RESULT: attribute values are not up to date.

code:

groovy:

import java.util.Map;

import com.pmease.quickbuild.Context;
import com.pmease.quickbuild.Quickbuild;
import com.pmease.quickbuild.grid.GridNode;

Map<String, String> userAttributes = node.getUserAttributes();
userAttributes.put("paf", "puf");
for (String key: userAttributes.keySet())
  Context.getLogger().info(key);
node.setUserAttributes(userAttributes, true);