@JohnFromGWN
Hate to see you go but completely understand why. Thanks for helping me and others. Stay safe.

@Reyser
I get @JohnFromGWN's post might've been unnecessary but so is being rude towards him. A simple "don't do that" would've been way better. John has been super helpful and one of the few frequent posters on the forum so I don't see the point in disrespecting him.

@JohnFromGWN
Oh ok I misunderstood.
Not sure really but where are you putting "int MyIndex = PaintIndex.Value * 2;" part at?

@JohnFromGWN
Are you wanting to multiply the current value by 2 because yea the multiplier is just the amount it increments by.

@JohnFromGWN
No problem.
What exactly are you looking for documentation on? The EventHandler I found was just by scrolling through the autocomplete menu that pops. I knew of the EventHandlers being a thing I think from back when I used to mess with VB when I was younger.

I used this:

if (Game.IsKeyPressed(Keys.ShiftKey))
        {
            settingsVehicleSpeedRequired.Multiplier = 2;
        }
        else
        {
            settingsVehicleSpeedRequired.Multiplier = 1;
        }

in the OnTick function to let me move the slider faster.

EDIT:
Just an example of what I did.

@JohnFromGWN
Are you using the EventHandler like:
"PaintIndex.ValueChanged += PaintIndex_ValueChanged;" and then just put
"Function.Call(Hash.SET_VEHICLE_COLOURS, LastVehicle, PaintIndex.Value, PaintIndex.Value)" into the new function?

Wasn't sure how you had it all setup but was just curious. Working on a mod now so I'll give this a try and see if I can make it work.

EDIT:
So quick test and it works fine for me using

private void PaintIndex_ValueChanged(object sender, EventArgs e)
    {
            Function.Call(Hash.SET_VEHICLE_COLOURS, Game.Player.Character.LastVehicle, PaintIndex.Value, PaintIndex.Value);
            GTA.UI.Screen.ShowSubtitle("Paint IndexValue is " + PaintIndex.Value, 4000);
    }

Obviously you'd have to check if the vehicle exists and all of that but I had no issues.

@Sn00ras
Not talking about this specific situation but in general.

I actually fixed this for someone using a script so it's at least doable through that.

@MDizz
If only everyone followed this lol. Hate seeing 3 year old mods getting 1 star rating because "they don't work" but are obviously outdated and the creator is no longer active.

@JohnFromGWN
Going to probably be using LemonUI as an option for all of my mods and this really helped make it more convenient. Thanks!