Okay! No problem! Thank you for helping me! Is it okay to look like this picture? The condition is set to require item12, dispel herbs, like this.
Viewing post in [CGMZ][Alpha]Conditional Choices for RPG Maker MZ comments
It is odd as I cannot reproduce the issue in my test project. Are you sure you don't have a dispel herb in your inventory? Do you have any errors or warnings in the dev tool console if you press F8? Do you have any non-CGMZ plugins, and could you try temporarily turning them off to rule out a conflict if so?