Add an input to my MT5 bot that represent the set file

Hello everyone,

I’m working on an Expert Advisor in MQL5 and I’d like to add a feature where the user can select a predefined set of parameters from a dropdown.

Here’s what I’m trying to achieve:

Current Setup

Let's said i have three parameters in my EA: (not visible to the user)

Goal

I want to create an additional input, visible to the user, that lets them select a predefined "trading set."

For example:

• Set 1 :

  • Parameter1 = 10
  • Parameter2 = 13
  • Parameter3 = 23

• Set 2 :

  • Parameter1 = 4
  • Parameter2 = 13
  • Parameter3 = 98

When the user selects a set, he just see the input "Trading set" with as values "Set 1", "Set 2".
When he click on one, the corresponding values for the parameters should be automatically assigned.