qTranslate-X and filter hooks

I am using qTranslate-X with the Offers for WooCommerce plugin. I am trying to use filter hooks to set the language text. Here is an example of a code snippet in the functions.php:

`function custom_donatation_amount( $text ) {
$text = ‘[:en]English text[:nl]Dutch text[:]’;
return $text;
}
add_filter( ‘aeofwc-offer-form-label-price-each’, ‘custom_donatation_amount’ );

The result is that it outputs as it was input.

I have also tried the following methods:

[:en]English text[:][:nl]Dutch text[:] Result: outputs as it was input.

[:en]English Text[:][:nl] Dutch text [:] Result: outputs as “[:en]English text[:][:nl]Dutch text[:]”

<!--:en-->English text<!--:--><!--:nl-->Dutch text<!--:--> Result: outputs as “English TextDutch text”

I have also tried escaping the brackets with the backslash (\) in the $text variable.

Anyone have any idea’s?

https://www.ads-software.com/plugins/qtranslate-x/