Can I simulate a different corruption on my main weapon?

I have read this post and still have a question.

My question is:
Hello and thank you for your great work here!
I am a happy subscriber and my question is this: I have a main weapon with corruption (intellect 1-8% all the time) and I want to simulate it with strikethrough 4% or severe 9-12%, because my whole build is based on crit.
How can I change my main weapon corruption in the sim interface? Is that possible?
Thank you.

Right now there isn’t a way to simulate Mar’kowa, the Mindpiercer with a different corruption effect because that weapon always rolls with that unique effect. On other weapons you can simulate whatever effect you want, though.

Click the arrow/carrot symbol next to an item in the item list to see customization options. In there you can choose a corrupted bonus.

It worked like a charm!
Thank you very much and keep up the good work!