diff -r 40b0f05e2545 -r 9d46ae9d4a2e rt/vm/src/main/java/org/apidesign/vm4brwsr/VM.java
--- a/rt/vm/src/main/java/org/apidesign/vm4brwsr/VM.java	Thu Apr 28 05:58:47 2016 +0200
+++ b/rt/vm/src/main/java/org/apidesign/vm4brwsr/VM.java	Tue May 10 04:52:05 2016 +0200
@@ -363,7 +363,7 @@
     protected String accessField(String object, FieldData field, String[] fieldInfoName)
     throws IOException {
         if (field != null && !field.isStatic()) {
-            return "fld_" + object + "_" + field.getName();
+            return "['fld_" + object + "_" + field.getName() + "']";
         } else {
             String mangledName = "_" + fieldInfoName[1];
            return accessNonVirtualMember(