Regular Expression to change output width

[Pirate Elf]

Guys, I'm rusty at best, but here recently I have been getting back into working on small projects. My recent project is a friend wants to make it to where whenever anyone posts an embedded file (say like youtube) it will search for the width and no matter what the width is it will replace it with width="500". I never fully wrapped my head around regex so this one is stumping me. I get what I want to do, and a general concept of what the code may look like, but wondering if anyone else could look over it and give me some pointers.

Intial Code Concept

Code: Select all

sub ImageSize {
my $text = shift;
if ($text =~ m/(width=.*?\")/i) {
$width =~ s/(width=.*?\")/width=\"500\"/ig;
return $text}


[SrNupsen]

Um... was ist falsch mit dem Search & replace addon?