Not compatibility between shortcode

Hello guys:

I’m using the next shortcodes:

[dynamichidden cf7-counter “CF7_counter”]
[dynamichidden nombretecnico “CF7_get_current_user key=’display_name'”]

The counter that I use, the code in the functions.php is:

//Define the key to store in the database
define( 'CF7_COUNTER', 'cf7-counter' );
 
//Create the shortcode which will set the value for the DTX field
function cf7dtx_counter(){
    $val = get_option( CF7_COUNTER, 0) + 1;  //Increment the current count
    return $val;
}
add_shortcode('CF7_counter', 'cf7dtx_counter');
 
//Action performed when the mail is actually sent by CF7
function cf7dtx_increment_mail_counter(){
    $val = get_option( CF7_COUNTER, 0) + 1; //Increment the current count
    update_option(CF7_COUNTER, $val); //Update the settings with the new count
}
add_action('wpcf7_mail_sent', 'cf7dtx_increment_mail_counter');

First I used the next shortcodes: [dynamichidden cf7-counter “CF7_counter”]
[dynamichidden nombretecnico “CF7_get_current_user”]

The counter worked fine, but when I added key=’display_name” to CF7_get_current_user, the counter It stopped working.

How can I fix it?

Thanks guys for this plugin, awesome.