execute bash script via getJSON and pass argument to it

I'm able to execute bash script on server side linux via getJSON method

$.getJSON("settings/test_test.sh", function( data ) {
    var items = [];
    $.each( data, function( key, val ) {
        if(key=="retval"){
            if(val=="ok"){
                return;
            } else {
                return;
            }
        }
    });
    console.log("Command Video: Error execuite script.");
    return;
});

But i want to type an argument to it! I found some problems when i tried to implement this. Is there any possibilities to decide this problem? My bash script:

#!/bin/sh

case "$1" in
"1")
        sed -i -e 's/abc/xyz/g' /var/www-utils/file.txt
        ;;
"2" | "3")
        sed -i -e 's/xyz/abc/g' /var/www-utils/file.txt
        ;;
*)
        sed -i -e 's/abc/acb/g' /var/www-utils/file.txt
        ;;
esac

[
        {
                echo '"retval": "ok"'
        }
]

Everything works as expected when I execute script on server-machine. But if I'm trying to do same problem is GET http://192.168.10.1/settings/test_test.sh%201 404 (Not Found)