diff --git a/Akash Articles/RegEx/boundary_matchers.html b/Akash Articles/RegEx/boundary_matchers.html
index 7082251..d42f081 100644
--- a/Akash Articles/RegEx/boundary_matchers.html	
+++ b/Akash Articles/RegEx/boundary_matchers.html	
@@ -68,7 +68,7 @@
 		For example,</p>
 
 		<div class="container">
-		<iframe scrolling="no" style="position: absolute; top: -9999em; visibility: hidden;" onload="this.style.position='static'; this.style.visibility='visible';" src="https://regexr.com/4vtsb" class="embed"></iframe>
+		<iframe scrolling="no" style="position: absolute; top: -9999em; visibility: hidden;" onload="this.style.position='static'; this.style.visibility='visible';" src="https://regexr.com/4vuof" class="embed"></iframe>
 		</div></li>
 
 		<p>It will show a match, only if the pattern is occuring at the start of the line.</p>
@@ -77,7 +77,7 @@
 		<li><p><strong>Anchor <code>$</code></strong>: Similarly, <code>$</code> is used to match patterns at the very end of a line.</p>
 
 		<div class="container">
-		<iframe scrolling="no" style="position: absolute; top: -9999em; visibility: hidden;" onload="this.style.position='static'; this.style.visibility='visible';" src="https://regexr.com/4vtsb" class="embed"></iframe>
+		<iframe scrolling="no" style="position: absolute; top: -9999em; visibility: hidden;" onload="this.style.position='static'; this.style.visibility='visible';" src="https://regexr.com/4vuol" class="embed"></iframe>
 		</div>
 
 		<p>It will show a match, only if the pattern is occuring at the end of a line.</p>
@@ -142,7 +142,7 @@
 		<p>Predict the output of the following regex:</p>
 
 		<ol>
-		<li><strong>RegEx:</strong> <code>^[\w$#%@!&amp;^*]{6,18}$</code> <br>
+		<li><strong>RegEx:</strong> <code>^[\wYou can't use 'macro parameter character #' in math mode</code> <br>
 		<strong>Text:</strong>
 		<code>This is matching passwords of length between 6 to 18:
 		Abfah45$