[REGEX-Cleaner.php] Replace all bbcode with a certain url

[محروم.كوم]

hi,
i have a problem with the REGEX and cleaner.php from impex tools.

what i want is to change the BBCode [IMG] of all images which have the "example.com" url to [AME] BBCode

PHP Code:
[IMG]http://example.com/img/cbhdgvgdqarb.jpg[/IMG]


to -->>

PHP Code:
[AME]http://example.com/img/cbhdgvgdqarb.jpg[/AME]

so this is my idea, but dont work:

PHP Code:
$text = preg_replace('#(http.*example\.com.*)\[/img:[a-z0-9]+\]#siU', '[AME]h$1[/AME]', $text);

are here experts that can fix this to a clean regexcode`? __DEFINE_LIKE_SHARE__