How to write this addon/script?

Hey!
Im posting this here because I cannot post on wowinterface.com in their Help section about LUA/CODE. If someone can help me understand how to post there it would be ideal.

There is a site called: https://addon.bool.no/

It helps you create an addon by writing down or copying text of the right core code and then saving it as your own addon.
I have used it with a pretty simple code that I found to hide blizzard defualt target frame and focus frame buffs and debuffs.

I have an addon called eBar and another called LoseControl, you might be familiar with these.

The request or question I have is for someone to help me write in code for me, so that I can copy it into this website to make an addon.
The addon I want to make should do this:

Hide or SetAlpha to 0 on a few frames when Im in a party or raid that are a total of 4 people OR party3 is available. (Im not sure which one is easier or more logical for a script.)

The frames that should be hidden during the condition about party/raid size are frames from eBar and LoseControl addons;
eBar_bar_4
eBar_bar_5
eBar_bar_6
eBar_bar_7
LoseControlparty1
LoseControlparty2

Im not sure this is possible to control these frames from a script from another addon like this, but if it is I would like to know that too.

Thank you all for reading!