Hi,I have 2 fields, one is a picklist field and the other is a text field.I need a validation rule that if i selected one of the options in the picklist field i must fill the text field.For example i pick the "other" option in the picklist field then the text field is mandatory, otherwise it can blank/empty.I was try to do this with IF and its not working:IF( $ObjectType.Leads__c.Fields.Reason__c = "Other", Other_Description__c <> "" , Other_Description__c = "" )Thanks.