i can only use one "label file" in ~/language/english/ directory

I wrote this code :
               <?php echo "lang('account_creation_successful') : ",lang('account_creation_successful');?>
                <br/>
                <?php echo "lang('lp_test') : ",lang('lp_test');?>

The result is displayed correctly for the label 'account_creation_successful'
Nothing is displayed for the label 'lp_test'

The value of 'account_creation_successful' is stored in the file "ion_auth_lang.php"
The value of 'lp_test' is stored in the file "label_perso_lang.php"
Both files are in the ~/language/english/ directory

Is there anything I forgot ?

Thank you for your help

Attached Files

  label_perso_lang.php (Size: 285 bytes / Downloads: 124)