Fix reference to code snippet variable name

Author: dargilco

articles/ai-services/computer-vision/includes/how-to-guides/analyze-image-40-csharp.md

@@ -87,7 +87,7 @@ This section shows you how to make an analysis call to the service.
 
 Call the **Analyze** method on the **ImageAnalysisClient** object, as shown here. The call is synchronous, and will block until the service returns the results or an error occurred. Alternatively, you can call the non-blocking **AnalyzeAsync** method.
 
-Use the input objects created in the above sections. To analyze from an image buffer instead of URL, replace `imageURL` in the method call with the `imageStream` variable.
+Use the input objects created in the above sections. To analyze from an image buffer instead of URL, replace `imageURL` in the method call with the `imageData` variable.
 
 [!code-csharp[](~/cognitive-services-quickstart-code/dotnet/ComputerVision/4-0/image-analysis-how-to/Program.cs?name=snippet_call)]
 

articles/ai-services/computer-vision/includes/how-to-guides/analyze-image-40-java.md

@@ -87,7 +87,7 @@ This section shows you how to make an analysis call to the service.
 
 Call the **analyze** method on the **ImageAnalysisClient** object, as shown here. The call is synchronous, and will block until the service returns the results or an error occurred. Alternatively, you can use a **ImageAnalysisAsyncClient** object instead, and call its **analyze** method which is non-blocking. 
 
-Use the input objects created in the above sections. To analyze from an image buffer instead of URL, replace `imageURL` in the method call with `imageBuffer`.
+Use the input objects created in the above sections. To analyze from an image buffer instead of URL, replace `imageURL` in the method call with `imageData`.
 
 [!code-java[](~/cognitive-services-quickstart-code/java/ComputerVision/4-0/ImageAnalysisHowTo.java?name=snippet_call)]
 

articles/ai-services/computer-vision/includes/how-to-guides/analyze-image-40-js.md

@@ -51,7 +51,7 @@ The Analysis 4.0 API gives you access to all of the service's image analysis fea
 
 ## Call the Analyze API with options
 
-The following code calls the Analyze API with the features you selected above and additional options, defined below. To analyze from an image buffer instead of URL, replace `imageURL` in the method call with `imageBuffer`.
+The following code calls the Analyze API with the features you selected above and additional options, defined below. To analyze from an image buffer instead of URL, replace `imageURL` in the method call with `imageData`.
 
 [!code-javascript[](~/cognitive-services-quickstart-code/javascript/ComputerVision/4-0/how-to.js?name=snippet_call)]