How create a script for Google Docs with some Docs specific paragraphs configs? [closed]

I'm trying to create a script for Google Docs with some specific paragraphs configs. Docs only have a few number of paragraphs styles ("Title", "Headings", etc.).

I need a script with this configs:

4 cm indentation; Arial, font size 10; line spacing should be simple; a space of 1.5 must be left between the rest of the text and the citation; justified text.

In other words, I want to create a new paragraph style ("Citations").

I've alredy found a good script on the internet but I have no idea how to modify this with the configs that I mentioned before (yes, I'm a newbie).

Heres the code of the script I've mentioned before:

// is called by google docs when a document is open// adds a menu with a menu item that applies a style to the currently selected textfunction onOpen() {  DocumentApp.getUi()  .createMenu('Extras')  .addItem('Apply code style', 'applyCodeStyle')  .addToUi();}// definition of a style to be appliedvar style = {  bold: false,  backgroundColor: "#DDDDDD",  fontFamily: DocumentApp.FontFamily.CONSOLAS};// helper function that strips the selected element and passes it to a handlerfunction withElement(processPartial, processFull) {  var selection = DocumentApp.getActiveDocument().getSelection();  if (selection) {    var elements = selection.getSelectedElements();    for (var i = 0; i < elements.length; i++) {      var element = elements[i];      if (element.getElement().editAsText) {        var text = element.getElement();        if (element.isPartial()) {          var from = element.getStartOffset();          var to = element.getEndOffsetInclusive();          return processPartial(element, text, from, to);        } else {          return processFull(element, text);        }      }    }  }}// called in response to the click on a menu itemfunction applyCodeStyle() {  return withElement(    applyPartialStyle.bind(this, style),    applyFullStyle.bind(this, style)  );}// applies the style to a selected text rangefunction applyPartialStyle(style, element, text, from, to) {  text.setFontFamily(from, to, style.fontFamily);  text.setBackgroundColor(from, to, style.backgroundColor);  text.setBold(from, to, style.bold);}// applies the style if the entire element is selectedfunction applyFullStyle(style, element, text) {  text.setFontFamily(style.fontFamily);  text.setBackgroundColor(style.backgroundColor);  text.setBold(style.bold); }

In fact, I wanna create a specific paragraph style for citations with this config: "4 cm indentation; Arial, font size 10; Line spacing should be simple; A space of 1.5 must be left between the rest of the text and the citation; Justified text".

I've found and used the code script that I mentioned on the question because it works, but I have to adapt it to the paragraphs configs that I need. That's the point, guys: I have no idea how to adapt this. Some tips?

So, I wanna create a new paragraph style (not "Headings" and "Titles") for my academic citations (that's the reason of some specifics configs, as font size, font type, etc.). Microsoft Word offers a "Citation" paragraph button, but Docs no.

Thanks all!