rule-builder | Fluent validation rule builder for Laravel | Validation library

I'm attempting to build a function in google script that would allow me to code in certain column names (as these will remain constant), and to have said function find that column by the name, and create/insert a custom formula via conditional formatting to highlight duplicates in that column. The formula to find duplicates is =COUNTIF(E:E,E1)>1 (using column E as an example).

So to re-state, what I'm trying to do is:

1. Have a function that inserts a new conditional format rule to highlight duplicates in a row
2. Have the formula for the new conditional format be dynamic in case the column moves between data sets (although the column name will be the same)
3. Have this function insert the conditional format into a column by name, instead of the number

I've tried to find something similar to this on stackoverflow but not finding much luck, just a few posts that are:

Custom Formula in Condition Format Rule Builder Script

Get column values by column name not column index

So this sheet would find the column "WOW":

Desired outcome/Would look like this after the function has ran (Highlight E2 and E2 in the WOW column):

So my attempt at making this code is below, however I'm hoping someone has a better idea as it's not quite working and this seems to be advanced coding (and I'm a newbie)

I am making custom conditional formatting rules using this method: ConditionalFormatRuleBuilder.

However, If I ever update it, say the color in .setBackground("#FF0000"), and run it again, it creates a new conditional formatting rule that conflicts with the original one.

What I want to know, is in that example is there a way to remove the rule defined as rule? For example is there an opposite of rules.push(rule);? Something like rules.remove(rule); ?

Here's an example from my code. I currently have this:

I need to create UI for a query builder. I want to do something like this

The problem is that I have no idea how to create the And/Or operator "brackets".

according to documents: https://developers.google.com/apps-script/reference/spreadsheet/conditional-format-rule-builder

Goal: Change range (sheetname, not the a1Notation) inside a ConditionalFormatRuleBuilder.copy()

Error: Conditional format rule cannot reference a different sheet.

I am trying to use the copy method thats is (not so) explained. With the copy i know i have al the arguments for the new conditional formatting i need. Only thing i need to change is the sheetname. Add ranges is working fine, but change/clear the ranges i can't seem to figure out. I found a post, but i want it to make more generic. This example is fine if you know the conditions to work with.

In the docs there is also a .build() is that a option i need in implement?

MainFunction: