Hello, I am in Use Numbers, Currency, and Percentages in Formulas module. My formula is correct in the Opportunity object when I test for Cylinder Volume. But Salesforce Trailhead is still giving me error "The ‘Cylinder_Volume__c’ field in the Opportunity object doesn't have a valid formula." I have tried other formulas such as putting 3.14 at the end or using ROUND((3.14*(Radius__c ^ 2) * Height__c ),0). I have also created an entirely new environment. I still get the same error in Trailhead but it works in my environment. Please advise.
Quick update: Trailhead only accepted my answer if the entire formula was lowercase. I went into Radius and Height fields individually to change R to r and H to h so that they Cylinder Volume's formula was all in lowercase. Trailhead finally accepted this as the correct answer.
