I just need to know what I skipped, following the guide I do not understand what is missing;

mods.immersiveengineering.Excavator

//Exavetor addRecipe
//mods.immersiveengineering.Excavator.addMineral(String name, int mineralWeight, double failChance, String[] ores, double[] chances, @optional int[] dimensionWhitelist, @optional boolean blacklist);
mods.immersiveengineering.Excavator.addMineral("Iron Ore", 25, 0.5,["btt:deep_iron_ore"], [0.02]);

You will need to specify your issue a bit more than that, I'm afraid. Version numbers, what you are trying to do, what errors you are getting, log files, all that stuff.

I would like to add a mineral to the exavator;
added the string above, it does not happen except for a minetweaker error; I have the Immersive Engineering version 0.12 - 80

craftweaker
https://pastebin.com/qwA7YJ6d

fml
https://pastebin.com/FUC5beAV

Line 83:

[INITIALIZATION][CLIENT][ERROR] [crafttweaker | SIDE_CLIENT]: Error parsing Immersive_Eng.zs:5 -- ; expected

Looks like you're missing a semicolon around line five in Immersive_Eng.zs and it can't process the file. Post the file contents?

Yeah, please provide the zenscript file as well

Ores should have OreDictionary names, not registry names.

For example oreIron?

This is the file .zs https://pastebin.com/NwTRN8C8

So I need to create one OreDictionary?

No you need to use items that are already registered or use Minetweaker to register them (if that option still exists)

I'll be closing this for now, since it's a question of Minetweaker functionality.

do you have a guide that explains better than the wiki?

Well I didn't write the wiki, so no =P

But yes, only OreDictionary names work (if I remember my own code here). So "oreIron", "nuggetGold", that sort of stuff. You can usually figure those out with the /mt hand command