diff --git a/Practical/Practical Exam/PL-SQL/P4 - PL-SQL Block.md b/Practical/Practical Exam/PL-SQL/P4 - PL-SQL Block.md
index 79eb276..29df949 100644
--- a/Practical/Practical Exam/PL-SQL/P4 - PL-SQL Block.md	
+++ b/Practical/Practical Exam/PL-SQL/P4 - PL-SQL Block.md	
@@ -35,8 +35,7 @@ DECLARE
     p_roll Student.Roll%type;
     nodata EXCEPTION;
 BEGIN
-		DBMS_OUTPUT.PUT_LINE('Enter roll number: ');
-    p_roll := &p_roll;
+    p_roll := &p_roll; -- specify value directly for Live SQL. Eg.: p_roll := 1;
 
     IF (p_roll < 0) THEN
         raise nodata;