diff --git a/UsingVariables-Objc/UsingVariables-Objc.xcodeproj/project.xcworkspace/xcuserdata/thomasfox.xcuserdatad/UserInterfaceState.xcuserstate b/UsingVariables-Objc/UsingVariables-Objc.xcodeproj/project.xcworkspace/xcuserdata/thomasfox.xcuserdatad/UserInterfaceState.xcuserstate
new file mode 100644
index 0000000..0e0beac
Binary files /dev/null and b/UsingVariables-Objc/UsingVariables-Objc.xcodeproj/project.xcworkspace/xcuserdata/thomasfox.xcuserdatad/UserInterfaceState.xcuserstate differ
diff --git a/UsingVariables-Objc/UsingVariables-Objc.xcodeproj/xcuserdata/thomasfox.xcuserdatad/xcschemes/UsingVariables-Objc.xcscheme b/UsingVariables-Objc/UsingVariables-Objc.xcodeproj/xcuserdata/thomasfox.xcuserdatad/xcschemes/UsingVariables-Objc.xcscheme
new file mode 100644
index 0000000..236a6c5
--- /dev/null
+++ b/UsingVariables-Objc/UsingVariables-Objc.xcodeproj/xcuserdata/thomasfox.xcuserdatad/xcschemes/UsingVariables-Objc.xcscheme
@@ -0,0 +1,112 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "0630"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "71E54D17199D3CDC009FF939"
+               BuildableName = "UsingVariables-Objc.app"
+               BlueprintName = "UsingVariables-Objc"
+               ReferencedContainer = "container:UsingVariables-Objc.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "NO"
+            buildForArchiving = "NO"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "71E54D27199D3CDC009FF939"
+               BuildableName = "UsingVariables-ObjcTests.xctest"
+               BlueprintName = "UsingVariables-ObjcTests"
+               ReferencedContainer = "container:UsingVariables-Objc.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      buildConfiguration = "Debug">
+      <Testables>
+         <TestableReference
+            skipped = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "71E54D27199D3CDC009FF939"
+               BuildableName = "UsingVariables-ObjcTests.xctest"
+               BlueprintName = "UsingVariables-ObjcTests"
+               ReferencedContainer = "container:UsingVariables-Objc.xcodeproj">
+            </BuildableReference>
+         </TestableReference>
+      </Testables>
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "71E54D17199D3CDC009FF939"
+            BuildableName = "UsingVariables-Objc.app"
+            BlueprintName = "UsingVariables-Objc"
+            ReferencedContainer = "container:UsingVariables-Objc.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+   </TestAction>
+   <LaunchAction
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      buildConfiguration = "Debug"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      allowLocationSimulation = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "71E54D17199D3CDC009FF939"
+            BuildableName = "UsingVariables-Objc.app"
+            BlueprintName = "UsingVariables-Objc"
+            ReferencedContainer = "container:UsingVariables-Objc.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </LaunchAction>
+   <ProfileAction
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      buildConfiguration = "Release"
+      debugDocumentVersioning = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "71E54D17199D3CDC009FF939"
+            BuildableName = "UsingVariables-Objc.app"
+            BlueprintName = "UsingVariables-Objc"
+            ReferencedContainer = "container:UsingVariables-Objc.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>
diff --git a/UsingVariables-Objc/UsingVariables-Objc.xcodeproj/xcuserdata/thomasfox.xcuserdatad/xcschemes/xcschememanagement.plist b/UsingVariables-Objc/UsingVariables-Objc.xcodeproj/xcuserdata/thomasfox.xcuserdatad/xcschemes/xcschememanagement.plist
new file mode 100644
index 0000000..1ac2819
--- /dev/null
+++ b/UsingVariables-Objc/UsingVariables-Objc.xcodeproj/xcuserdata/thomasfox.xcuserdatad/xcschemes/xcschememanagement.plist
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>SchemeUserState</key>
+	<dict>
+		<key>UsingVariables-Objc.xcscheme</key>
+		<dict>
+			<key>orderHint</key>
+			<integer>0</integer>
+		</dict>
+	</dict>
+	<key>SuppressBuildableAutocreation</key>
+	<dict>
+		<key>71E54D17199D3CDC009FF939</key>
+		<dict>
+			<key>primary</key>
+			<true/>
+		</dict>
+		<key>71E54D27199D3CDC009FF939</key>
+		<dict>
+			<key>primary</key>
+			<true/>
+		</dict>
+	</dict>
+</dict>
+</plist>
diff --git a/UsingVariables-Objc/UsingVariables-Objc/AppDelegate.m b/UsingVariables-Objc/UsingVariables-Objc/AppDelegate.m
index 6650c8b..6e32103 100644
--- a/UsingVariables-Objc/UsingVariables-Objc/AppDelegate.m
+++ b/UsingVariables-Objc/UsingVariables-Objc/AppDelegate.m
@@ -17,9 +17,12 @@ @implementation AppDelegate
 
 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
 
-    // Insert code here...
-    
-    
+    CGFloat weight;
+    CGFloat height;
+    weight = 185.0f;
+    height = 71.0f;
+    CGFloat bodyMassIndex = (weight / (height * height)) * 703;
+    NSLog(@"%.2f",bodyMassIndex);
     return YES;
 }