NativeUI Adding Button Variable Code

-- actual code --
var variablename = new UIMenuItem("Remove Wanted Level", "Lowers Wanted Level");
        menu.AddItem(variablename);
        menu.OnItemSelect += (sender, item, index) =>
        {
            if (item == variablename)
            {
                Game.Player.IsInvincible = true;
                UI.Notify("Code Activated");
            }
        };
-- non-code --
you can change "variablename" to any solid name, like example "wantedlevel". that way it'd say "var wantedlevel".
anything that has the variablename in it, change it to what you named the variable
for instance, if you named the variable "level" you'd change the "var variablename" to "var level", you'd change "if (item == variablename)" to "if (item == level)" and "menu.AddItem(variablename);" to "menu.AddItem(level);"
hope this clears it up.
native database for where I got "Game.Player.IsInvincible" from:
http://www.dev-c.com/nativedb/ (this is where I got all the natives and hashes from)
https://github.com/Guad/NativeUI/blob/master/MenuExample.cs (this is where I got some of the regular code from)
https://www.gta5-mods.com/tools/gta-v-script-creator (this is where I got the "Game.Player.IsInvincible" code from, the program itself includes the code.)