diff --git a/core/src/main/java/org/lflang/LinguaFranca.xtext b/core/src/main/java/org/lflang/LinguaFranca.xtext
index 593b06317e..e1ae911246 100644
--- a/core/src/main/java/org/lflang/LinguaFranca.xtext
+++ b/core/src/main/java/org/lflang/LinguaFranca.xtext
@@ -111,7 +111,6 @@ TypeExpr:
 TargetDecl:
     'target' name=ID (config=KeyValuePairs)? ';'?;
 
-
 /////////// Statements
 
 /**
@@ -283,6 +282,9 @@ TypedVariable:
 Variable:
     TypedVariable | Timer | Mode | Watchdog;
 
+Member:
+    Variable | Reaction | Method;
+
 VarRef:
     (variable=[Variable] | container=[Instantiation] '.' variable=[Variable]
     | interleaved?='interleaved' '(' (variable=[Variable] | container=[Instantiation] '.' variable=[Variable]) ')') ('as' (alias=ID))?
diff --git a/core/src/main/java/org/lflang/validation/LFNamesAreUniqueValidationHelper.java b/core/src/main/java/org/lflang/validation/LFNamesAreUniqueValidationHelper.java
index 9c6267cb0a..cefbff40b0 100644
--- a/core/src/main/java/org/lflang/validation/LFNamesAreUniqueValidationHelper.java
+++ b/core/src/main/java/org/lflang/validation/LFNamesAreUniqueValidationHelper.java
@@ -2,7 +2,7 @@
 
 import org.eclipse.emf.ecore.EClass;
 import org.eclipse.xtext.validation.NamesAreUniqueValidationHelper;
-import org.lflang.lf.LfPackage;
+import org.lflang.lf.LfPackage.Literals;
 
 public class LFNamesAreUniqueValidationHelper extends NamesAreUniqueValidationHelper {
 
@@ -12,13 +12,17 @@ public class LFNamesAreUniqueValidationHelper extends NamesAreUniqueValidationHe
    */
   @Override
   public EClass getAssociatedClusterType(EClass eClass) {
-    if (LfPackage.Literals.INPUT == eClass
-        || LfPackage.Literals.OUTPUT == eClass
-        || LfPackage.Literals.TIMER == eClass
-        || LfPackage.Literals.ACTION == eClass
-        || LfPackage.Literals.PARAMETER == eClass
-        || LfPackage.Literals.INSTANTIATION == eClass) {
-      return LfPackage.Literals.VARIABLE;
+    if (Literals.ACTION == eClass
+        || Literals.INPUT == eClass
+        || Literals.INSTANTIATION == eClass
+        || Literals.METHOD == eClass
+        || Literals.OUTPUT == eClass
+        || Literals.PARAMETER == eClass
+        || Literals.REACTION == eClass
+        || Literals.STATE_VAR == eClass
+        || Literals.TIMER == eClass
+        || Literals.WATCHDOG == eClass) {
+      return Literals.MEMBER;
     }
     return super.getAssociatedClusterType(eClass);
   }
diff --git a/core/src/main/java/org/lflang/validation/LFValidator.java b/core/src/main/java/org/lflang/validation/LFValidator.java
index def6bcc8de..0a90891f3f 100644
--- a/core/src/main/java/org/lflang/validation/LFValidator.java
+++ b/core/src/main/java/org/lflang/validation/LFValidator.java
@@ -139,7 +139,7 @@ public class LFValidator extends BaseLFValidator {
 
   @Check(CheckType.FAST)
   public void checkAction(Action action) {
-    checkName(action.getName(), Literals.VARIABLE__NAME);
+    checkName(action.getName(), Literals.MEMBER__NAME);
     if (action.getOrigin() == ActionOrigin.NONE) {
       error(
           "Action must have modifier {@code logical} or {@code physical}.",
@@ -472,9 +472,9 @@ public void checkImportedReactor(ImportedReactor reactor) {
   public void checkInput(Input input) {
     Reactor parent = (Reactor) input.eContainer();
     if (parent.isMain() || parent.isFederated()) {
-      error("Main reactor cannot have inputs.", Literals.VARIABLE__NAME);
+      error("Main reactor cannot have inputs.", Literals.MEMBER__NAME);
     }
-    checkName(input.getName(), Literals.VARIABLE__NAME);
+    checkName(input.getName(), Literals.MEMBER__NAME);
     if (target.requiresTypes) {
       if (input.getType() == null) {
         error("Input must have a type.", Literals.TYPED_VARIABLE__TYPE);
@@ -555,9 +555,9 @@ public void updateModelInfo(Model model) {
   public void checkOutput(Output output) {
     Reactor parent = (Reactor) output.eContainer();
     if (parent.isMain() || parent.isFederated()) {
-      error("Main reactor cannot have outputs.", Literals.VARIABLE__NAME);
+      error("Main reactor cannot have outputs.", Literals.MEMBER__NAME);
     }
-    checkName(output.getName(), Literals.VARIABLE__NAME);
+    checkName(output.getName(), Literals.MEMBER__NAME);
     if (this.target.requiresTypes) {
       if (output.getType() == null) {
         error("Output must have a type.", Literals.TYPED_VARIABLE__TYPE);
@@ -1082,7 +1082,7 @@ public void checkTargetProperties(KeyValuePairs targetProperties) {
 
   @Check(CheckType.FAST)
   public void checkTimer(Timer timer) {
-    checkName(timer.getName(), Literals.VARIABLE__NAME);
+    checkName(timer.getName(), Literals.MEMBER__NAME);
     checkExpressionIsTime(timer.getOffset(), Literals.TIMER__OFFSET);
     checkExpressionIsTime(timer.getPeriod(), Literals.TIMER__PERIOD);
   }
@@ -1260,7 +1260,7 @@ public void checkModeTimerNamespace(Reactor reactor) {
                         + " modes)",
                     timer.getName()),
                 timer,
-                Literals.VARIABLE__NAME);
+                Literals.MEMBER__NAME);
           }
           names.add(timer.getName());
         }
@@ -1282,7 +1282,7 @@ public void checkModeActionNamespace(Reactor reactor) {
                         + " modes)",
                     action.getName()),
                 action,
-                Literals.VARIABLE__NAME);
+                Literals.MEMBER__NAME);
           }
           names.add(action.getName());
         }