Thanks for your screencast. The global option will be supported in beta 7. The format is :
${n/regexp/replace_format/option}
where option is g.
For instance.
$1
${1/./U/g}
will uppercase all characters in $1.
Note: you cannot use “.*?” as a regular expression. This will match zero-length character, and the result will be empty. However, you can use “.+?”.