Hyphen in column name breaks function in WordPress

My problem:

In a WordPress site, I have a plugin which adds data to a table. The table has some columns whose names contain hyphens.

I don’t know if this is exactly my problem but it seem that my function breaks when I try to echo the content of that field.

My function code:

function members_display() {
    global $wpdb;
    $sql = "SELECT text-529f61f42c30d AS name FROM wp_fm_data_5";
    $results = $wpdb->get_results($sql) or die(mysql_error());
    foreach ($results as $result) {
        echo $result->name;
    }
}

What i want to work is this:

function members_display() {
global $wpdb;
$sql = "SELECT * FROM wp_fm_data_5";
$results = $wpdb->get_results($sql) or die(mysql_error());
foreach ($results as $result) {
    echo $result->[text-529f61f42c30d];
}

}

How can I resolve this issue?