diff --git a/chapters/interfaces.adoc b/chapters/interfaces.adoc
index 120ba5fba..f7493db85 100644
--- a/chapters/interfaces.adoc
+++ b/chapters/interfaces.adoc
@@ -2249,11 +2249,13 @@ culled, if it is code:false it will not be culled.
     The variable decorated with code:CullPrimitiveEXT must: be declared
     using the code:Output {StorageClass}
   * [[VUID-{refpage}-CullPrimitiveEXT-07036]]
-    The variable decorated with code:CullPrimitiveEXT must: be declared as
-    an array of boolean values
-  * [[VUID-{refpage}-CullPrimitiveEXT-07037]]
-    The size of the array decorated with code:CullPrimitiveEXT must: match
-    the value specified by code:OutputPrimitivesEXT
+    code:CullPrimitiveEXT must: be declared as a boolean value member of a structure or a variable of type code:OpTypeArray of boolean values. 
+  * If code:CullPrimitiveEXT declared as an array of boolean values. The size of the array 
+    decorated with code:CullPrimitiveEXT must: match the value specified by code:OutputPrimitivesEXT
+  * If code:CullPrimitiveEXT is a member of a structure, there must: be a variable declared 
+    which is array of parent strucure that contains code:CullPrimitiveEXT. The size of the array must: match the value specified by code:OutputPrimitivesEXT.
+  * There must be only one declaration of the code:CullPrimitiveEXT associated with a entry
+    point's interface.
   * [[VUID-{refpage}-CullPrimitiveEXT-07038]]
     The variable decorated with code:CullPrimitiveEXT within the
     code:MeshEXT {ExecutionModel} must: also be decorated with the