diff --git a/azureChat.m b/azureChat.m
index fccf7da..27bdded 100644
--- a/azureChat.m
+++ b/azureChat.m
@@ -103,11 +103,11 @@
         function this = azureChat(systemPrompt, nvp)
             arguments
                 systemPrompt                       {llms.utils.mustBeTextOrEmpty} = []
-                nvp.Endpoint                       {mustBeNonzeroLengthTextScalar}
-                nvp.Deployment                     {mustBeNonzeroLengthTextScalar}
+                nvp.Endpoint                 (1,1) string {mustBeNonzeroLengthTextScalar}
+                nvp.Deployment               (1,1) string {mustBeNonzeroLengthTextScalar}
                 nvp.APIKey                         {mustBeNonzeroLengthTextScalar}
                 nvp.Tools                    (1,:) {mustBeA(nvp.Tools, "openAIFunction")} = openAIFunction.empty
-                nvp.APIVersion               (1,1) {mustBeAPIVersion} = "2024-02-01"
+                nvp.APIVersion               (1,1) string {mustBeAPIVersion} = "2024-02-01"
                 nvp.Temperature                    {llms.utils.mustBeValidTemperature} = 1
                 nvp.TopP                           {llms.utils.mustBeValidTopP} = 1
                 nvp.StopSequences                  {llms.utils.mustBeValidStop} = {}
diff --git a/tests/tazureChat.m b/tests/tazureChat.m
index 333b1c7..f56e04b 100644
--- a/tests/tazureChat.m
+++ b/tests/tazureChat.m
@@ -8,6 +8,7 @@
         InvalidGenerateInput = iGetInvalidGenerateInput;
         InvalidValuesSetters = iGetInvalidValuesSetters;
         StringInputs = struct('string',{"hi"},'char',{'hi'},'cellstr',{{'hi'}});
+        APIVersions = iGetAPIVersions();
     end
 
     methods(Test)
@@ -150,6 +151,19 @@ function keyNotFound(testCase)
             unsetenv("AZURE_OPENAI_API_KEY");
             testCase.verifyError(@()azureChat, "llms:keyMustBeSpecified");
         end
+
+        function canUseAPIVersions(testCase, APIVersions)
+            % Test that we can use different APIVersion value to call 
+            % azureChat.generate
+
+            testCase.assumeTrue(isenv("AZURE_OPENAI_API_KEY"),"end-to-end test requires environment variables AZURE_OPENAI_API_KEY, AZURE_OPENAI_ENDPOINT, and AZURE_OPENAI_DEPLOYMENT.");
+            chat = azureChat("APIVersion", APIVersions);
+
+            response = testCase.verifyWarningFree(@() generate(chat,"How similar is the DNA of a cat and a tiger?"));
+            testCase.verifyClass(response,'string');
+            testCase.verifyGreaterThan(strlength(response),0);
+
+        end
     end
 end
 
@@ -446,3 +460,7 @@ function keyNotFound(testCase)
             "Input",{{ validMessages  "ToolChoice" ["validfunction", "validfunction"] }},...
             "Error","MATLAB:validators:mustBeTextScalar"));
 end
+
+function apiVersions = iGetAPIVersions()
+apiVersions = cellstr(llms.azure.apiVersions);
+end
\ No newline at end of file