diff --git a/tutorial-20/Assignments.sol b/tutorial-20/Assignments.sol
index 5dfd9a8..7a31f83 100644
--- a/tutorial-20/Assignments.sol
+++ b/tutorial-20/Assignments.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.4.0;
+pragma solidity ^0.5.0;
 
 contract Assignments {
     function returnFirstValue(uint a, uint b) returns (uint) {
@@ -9,15 +9,15 @@ contract Assignments {
         return returnFirstValue({b:4, a:8});
     }
     
-    function returnAllValues(uint a, uint b, uint c) returns (uint, uint, uint) {
+    function returnAllValues(uint a, uint b, uint c) public returns (uint, uint, uint) {
         return (a,b,c);
     }
     
     function callerAll() public returns (uint, uint, uint) {
-        var(x,y,z) = returnAllValues(4,5,6);
+        (uint x, uint y, uint z) = returnAllValues(4,5,6);
         (x,y) = (y,x);
-        (x,) = returnAllValues(5,10,15);
-        (,z) = returnAllValues(10,20,30);
+        (x,,) = returnAllValues(5,10,15);
+        (,,z) = returnAllValues(10,20,30);
         return (x,y,z);
     }
-}
\ No newline at end of file
+}