diff --git a/DeadmansSwitch.sol b/DeadmansSwitch.sol
index 0b12d7d..45fa513 100644
--- a/DeadmansSwitch.sol
+++ b/DeadmansSwitch.sol
@@ -1,36 +1,48 @@
-// SPDX-License-Identifier: MIT
-pragma solidity ^0.8.0;
+    // SPDX-License-Identifier: MIT
+    pragma solidity ^0.8.0;
 
-contract DeadmansSwitch {
-    // TODO: Declare state variables
-    // Hint: You'll need variables for the owner, beneficiary, and last check-in block
+    contract DeadmansSwitch {
+        // TODO: Declare state variables
+        // Hint: You'll need variables for the owner, beneficiary, and last check-in block
+        address beneficiary;
+        address owner;
+        uint256 lastCheckIn;
+        // TODO: Implement constructor
+        constructor(address _beneficiary) {
+            // Hint: Initialize state variables
+            beneficiary = _beneficiary;
+            owner = msg.sender;
+            lastCheckIn = block.number;
+        }
 
-    // TODO: Implement constructor
-    constructor(address _beneficiary) {
-        // Hint: Initialize state variables
-    }
+        // TODO: Implement still_alive function
+        function still_alive() public {
+            // Hint: Update the last check-in block
+            require(msg.sender == owner,"Only owner can send still_alive calls");
+            lastCheckIn=block.number;   
+        }
 
-    // TODO: Implement still_alive function
-    function still_alive() public {
-        // Hint: Update the last check-in block
-    }
+        // TODO: Implement release funds function
+        function releaseFunds() public {
+            // Hint: Check if 10 blocks have passed since last check-in
+            // If so, transfer the contract balance to the beneficiary
+            require(block.number > 10 + lastCheckIn,"Owner is Still alive"); // checking whether the period is over
+            require(address(this).balance > 0,"No balance to transfer");
+            payable(beneficiary).transfer(address(this).balance);
 
-    // TODO: Implement release funds function
-    function releaseFunds() public {
-        // Hint: Check if 10 blocks have passed since last check-in
-        // If so, transfer the contract balance to the beneficiary
-    }
+        }
+        // event received(address , uint);
+        // TODO: Implement receive function to allow the contract to receive Ether
+        receive() external payable {}
 
-    // TODO: Implement receive function to allow the contract to receive Ether
-    receive() external payable {}
+        // Helper function for testing (optional)
+        function getLastCheckInBlock() public view returns (uint256) {
+            // TODO: Return the last check-in block
+            return lastCheckIn;
+        }
 
-    // Helper function for testing (optional)
-    function getLastCheckInBlock() public view returns (uint256) {
-        // TODO: Return the last check-in block
-    }
-
-    // Helper function for testing (optional)
-    function getCurrentBlock() public view returns (uint256) {
-        return block.number;
-    }
-}
\ No newline at end of file
+        // Helper function for testing (optional)
+        function getCurrentBlock() public view returns (uint256) {
+            return block.number;
+        }
+    }
\ No newline at end of file