Polylang string translation problem

Hi there,

I have a problem with a string translation.

I have a “TC Custom Javascript” plugin (WordPress) to add a welcome text to video header on my website (video header is without text by default).

My JS code inside this plugin looks like this:

(function($){
      
    "use strict"

  if( $('body').hasClass('home') ) {
    
    var mainTitle    = 'Witamy';
    var subTitle     = 'Działka inwestycyjna położona przy ul. Witebskiej 6 w Bydgoszczy';
    var buttonURL    = '#primary';
    var buttonLabel  = 'Zaczynajmy';
    
    var heroContent  = '<div class="slide-inner">';
        heroContent += '<div class="contain text-slider">';
        heroContent += '<h2 class="maintitle">'+mainTitle+'</h2>';
   		heroContent += '<p class="subtitle">'+subTitle+'</p>';
        heroContent += '</div>';
        heroContent += '<a href="'+buttonURL+'" class="roll-button button-slider" target="_top">'+buttonLabel+'</a>';
        heroContent += '</div>';

    $('.sydney-hero-area').append(heroContent);

  }  

})(jQuery);

However, there are no options under “WordPress > Languages > Strings translations” to translate these strings generated by custom JS plugin (mainTitle, subTitle).

Is it possible to translate my welcome text using “pll_the_languages” inside custom JS plugin or elsewhere?

Please help.

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