diff --git a/build_waf.sh b/build_waf.sh
new file mode 100644
index 00000000..880b2eae
--- /dev/null
+++ b/build_waf.sh
@@ -0,0 +1,4 @@
+./waf configure -T release --destdir=E:/source_engine --prefix=E:/source_engine --build-game=hl1 &&
+ ./waf install --strip
+
+# use can set --destdir and --prefix and set path ,  where you located source code
\ No newline at end of file
diff --git a/gameui/OptionsSubModification.cpp b/gameui/OptionsSubModification.cpp
index c4ed753c..75c00732 100644
--- a/gameui/OptionsSubModification.cpp
+++ b/gameui/OptionsSubModification.cpp
@@ -15,7 +15,6 @@
 
 #include <KeyValues.h>
 #include <vgui/IScheme.h>
-#include "tier1/convar.h"
 #include "vgui_controls/Controls.h"
 #include <vgui_controls/TextEntry.h>
 
@@ -26,7 +25,6 @@ using namespace vgui;
 
 COptionsSubModification::COptionsSubModification(vgui::Panel *parent) : PropertyPage(parent, nullptr)
 {
-// TODO: Android 
     // Create the slider for aspect ratio adjustments
     m_pAspectRatioSlider = new CCvarSlider(
         this,
@@ -37,31 +35,35 @@ COptionsSubModification::COptionsSubModification(vgui::Panel *parent) : Property
         true // Allow fractional values
     );
  
-    m_aspectRatioLabel = new TextEntry(this, "AspectRatioLabel");
-    m_aspectRatioLabel->AddActionSignalTarget(this);
+    m_pAspectRatioLabel = new TextEntry(this, "AspectRatioLabel");
+    m_pAspectRatioLabel->AddActionSignalTarget(this);
 
     m_pChangeCheatFlag = new CCvarToggleCheckButton(
        this , "ChangeCheatFlag" , "Change Cheat Flag" , "sv_cheats"
     );
-    m_giveWeaponButton = new Button(this, "GiveWeapon", "Give Weapon");
+    m_pGiveWeaponButton = new Button(this, "GiveWeapon", "Give Weapon");
     // Load settings from the associated resource file
     LoadControlSettings("Resource\\OptionsSubModification.res");
-    m_giveWeaponButton->SetCommand("GiveWeapon");
-    m_giveWeaponButton->AddActionSignalTarget(this);
+    m_pGiveWeaponButton->SetCommand("GiveWeapon");
+    m_pGiveWeaponButton->AddActionSignalTarget(this);
+
+    m_pGiveHealthKitButton = new Button(this, "GiveHealthKit", "Give Health Kit");
+    m_pGiveHealthKitButton->SetCommand("GiveHealthKit");
+    m_pGiveHealthKitButton->AddActionSignalTarget(this);
 
 
-    UpdateLabel(m_pAspectRatioSlider, m_aspectRatioLabel);
+    UpdateLabel(m_pAspectRatioSlider, m_pAspectRatioLabel);
 
-    m_giveWeaponButton->SetEnabled(true);
+    m_pGiveWeaponButton->SetEnabled(true);
 }
 COptionsSubModification::~COptionsSubModification() = default;
 
 void COptionsSubModification::OnTextChanged(Panel *panel)
 {
-    if (panel == m_aspectRatioLabel)
+    if (panel == m_pAspectRatioLabel)
     {
         char buf[64];
-        m_aspectRatioLabel->GetText(buf, 64);
+        m_pAspectRatioLabel->GetText(buf, 64);
 
         float fValue;
         int numParsed = sscanf(buf, "%f", &fValue);
@@ -101,7 +103,7 @@ void COptionsSubModification::OnControlModified(Panel *panel)
     // Update the label based on slider changes
     if (panel == m_pAspectRatioSlider && m_pAspectRatioSlider->HasBeenModified())
     {
-        UpdateLabel(m_pAspectRatioSlider, m_aspectRatioLabel);
+        UpdateLabel(m_pAspectRatioSlider, m_pAspectRatioLabel);
     }
 }
 
@@ -129,6 +131,11 @@ void COptionsSubModification::OnCommand(const char *command)
         engine->ExecuteClientCmd("impulse 101");
         Msg("GiveWeapon command triggered\n"); // Debug message
     }
+    if(!stricmp(command, "GiveHealthKit"))
+    {
+        engine->ExecuteClientCmd("give item_healthkit");
+        Msg("GiveHealthKit command triggered\n");
+    }
     else
     {
         BaseClass::OnCommand(command);  // Make sure to call the base class for any other commands
diff --git a/gameui/OptionsSubModification.h b/gameui/OptionsSubModification.h
index 3d70556c..57976437 100644
--- a/gameui/OptionsSubModification.h
+++ b/gameui/OptionsSubModification.h
@@ -55,8 +55,10 @@ protected:
 	void UpdateLabel(CCvarSlider *slider, vgui::TextEntry *label);
 
 private:
-	vgui::TextEntry *m_aspectRatioLabel;
-	vgui::Button *m_giveWeaponButton;
+	vgui::TextEntry *m_pAspectRatioLabel;
+	vgui::Button *m_pGiveWeaponButton;
+	vgui::Button *m_pGiveHealthKitButton;
+	
 
 	CCvarToggleCheckButton *m_pChangeCheatFlag;
 	CCvarSlider *m_pAspectRatioSlider;