diff --git a/sdk/metrics/+opentelemetry/+sdk/+metrics/MeterProvider.m b/sdk/metrics/+opentelemetry/+sdk/+metrics/MeterProvider.m
index 60d3ab3..646a078 100644
--- a/sdk/metrics/+opentelemetry/+sdk/+metrics/MeterProvider.m
+++ b/sdk/metrics/+opentelemetry/+sdk/+metrics/MeterProvider.m
@@ -49,12 +49,12 @@
                 % assert(mpproxy.Name == "libmexclass.opentelemetry.MeterProviderProxy");
                 obj.Proxy = libmexclass.proxy.Proxy("Name", ...
                     "libmexclass.opentelemetry.sdk.MeterProviderProxy", ...
-                    "ConstructorArguments", {mpproxy.ID});
+                    "ConstructorArguments", {mpproxy.ID, true});
                 % leave other properties unassigned, they won't be used
             else
                 obj.Proxy = libmexclass.proxy.Proxy("Name", ...
                     "libmexclass.opentelemetry.sdk.MeterProviderProxy", ...
-                    "ConstructorArguments", {reader.Proxy.ID, 0});
+                    "ConstructorArguments", {reader.Proxy.ID, false});
                 obj.MetricReader = reader;
             end
         end
diff --git a/sdk/metrics/src/MeterProviderProxy.cpp b/sdk/metrics/src/MeterProviderProxy.cpp
index 16eae65..e3f5f28 100644
--- a/sdk/metrics/src/MeterProviderProxy.cpp
+++ b/sdk/metrics/src/MeterProviderProxy.cpp
@@ -11,7 +11,8 @@ namespace libmexclass::opentelemetry::sdk {
 libmexclass::proxy::MakeResult MeterProviderProxy::make(const libmexclass::proxy::FunctionArguments& constructor_arguments) {
     
     libmexclass::proxy::MakeResult out;
-    if (constructor_arguments.getNumberOfElements() == 1)  {
+    matlab::data::TypedArray<bool> is_api = constructor_arguments[1];
+    if (is_api[0])  {
         // if argument is 1, assume it is an API Meter Provider to support type conversion
         matlab::data::TypedArray<uint64_t> mpid_mda = constructor_arguments[0];
         libmexclass::proxy::ID mpid = mpid_mda[0];
diff --git a/test/tmetrics.m b/test/tmetrics.m
index a64b128..99587d4 100644
--- a/test/tmetrics.m
+++ b/test/tmetrics.m
@@ -101,7 +101,7 @@ function testAddMetricReader(testCase)
             % adding a single value
             ct.add(1);
             pause(2.5);
-            clear p;
+            verifyTrue(testCase, opentelemetry.sdk.metrics.Cleanup.shutdown(p));
             results = readJsonResults(testCase);
             result_count = numel(results);
             verifyEqual(testCase,result_count, 2);
@@ -136,7 +136,7 @@ function testCounterBasic(testCase)
             pause(2.5);
 
             % fetch result
-            clear p;
+            verifyTrue(testCase, opentelemetry.sdk.metrics.Cleanup.shutdown(p));
             results = readJsonResults(testCase);
             results = results{end};
 
@@ -180,7 +180,7 @@ function testCounterDelta(testCase)
 
             % fetch results
             pause(2.5);
-            clear p;
+            verifyTrue(testCase, opentelemetry.sdk.metrics.Cleanup.shutdown(p));
             results = readJsonResults(testCase);
             dp1 = results{1}.resourceMetrics.scopeMetrics.metrics.sum.dataPoints;
             dp2 = results{2}.resourceMetrics.scopeMetrics.metrics.sum.dataPoints;
@@ -219,7 +219,7 @@ function testCounterAddAttributes(testCase)
             pause(2.5);
 
             % fetch result
-            clear p;
+            verifyTrue(testCase, opentelemetry.sdk.metrics.Cleanup.shutdown(p));
             results = readJsonResults(testCase);
             results = results{end};
 
@@ -263,7 +263,7 @@ function testCounterAddNegative(testCase)
             pause(2.5);
 
             % fetch results
-            clear p;
+            verifyTrue(testCase, opentelemetry.sdk.metrics.Cleanup.shutdown(p));
             results = readJsonResults(testCase);
             results = results{end};
             dp = results.resourceMetrics.scopeMetrics.metrics.sum.dataPoints;
@@ -303,7 +303,7 @@ function testUpDownCounterBasic(testCase)
             pause(5);
 
             % fetch result
-            clear p;
+            verifyTrue(testCase, opentelemetry.sdk.metrics.Cleanup.shutdown(p));
             results = readJsonResults(testCase);
             results = results{end};
 
@@ -348,7 +348,7 @@ function testUpDownCounterAddAttributes(testCase)
             pause(5);
 
             % fetch result
-            clear p;
+            verifyTrue(testCase, opentelemetry.sdk.metrics.Cleanup.shutdown(p));
             results = readJsonResults(testCase);
             results = results{end};
             dp = results.resourceMetrics.scopeMetrics.metrics.sum.dataPoints;
@@ -397,7 +397,7 @@ function testHistogramBasic(testCase)
             pause(10);
 
             % fetch results
-            clear p;
+            verifyTrue(testCase, opentelemetry.sdk.metrics.Cleanup.shutdown(p));
             results = readJsonResults(testCase);
             results = results{end};
             dp = results.resourceMetrics.scopeMetrics.metrics.histogram.dataPoints;
@@ -454,7 +454,7 @@ function testHistogramRecordAttributes(testCase)
             pause(10);
 
             % fetch results
-            clear p;
+            verifyTrue(testCase, opentelemetry.sdk.metrics.Cleanup.shutdown(p));
             results = readJsonResults(testCase);
             results = results{end};
             dp = results.resourceMetrics.scopeMetrics.metrics.histogram.dataPoints;
@@ -511,7 +511,7 @@ function testHistogramDelta(testCase)
             pause(2.5);
 
             % fetch results
-            clear p;
+            verifyTrue(testCase, opentelemetry.sdk.metrics.Cleanup.shutdown(p));
             results = readJsonResults(testCase);
             rsize = size(results);
             for i = 1:rsize(2)
@@ -559,10 +559,10 @@ function testGetSetMeterProvider(testCase)
 
             pause(2.5);
 
-            % perform test comparisons
+            %Shutdown the Meter Provider
             verifyTrue(testCase, opentelemetry.sdk.metrics.Cleanup.shutdown(mp));
-            clear mp;
 
+            % perform test comparisons
             results = readJsonResults(testCase);
             results = results{1};
             % check a counter has been created, and check its resource to identify the