I have a question regarding to add rules to Choice control. There are only two choices 'yes' and 'no' in the Choice. I want to add a rule that if the you click 'Yes' in Choice, then 'Status' cannot be 'In Progress'. The rule I wrote is 'and(equal(Status, "In Progress"), equal(ReadyForReview, "Yes"))', then Invalidate. I don't know what is wrong with it. It is my first time using Nintex form and I hope someone can help me on it.
Updated your post, removed assumed answered.
Is this O365? Even if not, you can compare Named controls using = sign. Status="In Progress". Make sure you are using the Named controls and not the Item Properties when using the formulas.