you like dynamic url?
/message/uid/1234
why out put 1234 ?
then create page and input new page PATTERN
(?<*uid>[0-9]+)/*/(?<*send>[0-9]+)/*
remove * and output code is just :VAR(uid); why /index/?uid=1234 is just :GET(uid);
remeber /index/1234 or any number is allowed only if not number its terminated try to use a letters n number dynamic url like /message/1234/ or /message/admin/ when page is not index.
