i want to know how to update subitem

Platform discussions monday dev
, ,
1

I programming in javascript and i need to update subitems, i´m try in this way:

buildEditSubItemQuery(
    boardId: number,
    itemId: string,
    subItemId: string,
    columnValues: object
  ): string {
    return `mutation {change_multiple_column_values(item_id: "${itemId}", board_id: ${boardId}, subitem_id: ${subItemId}, column_values: "${JSON.stringify(columnValues)}") {id}}`;
  }

But the api don´t recognize subitems_id, someone can recomend in the lib the correcly way to update one subitem in api monday?