Conditional count in Crystal Report XI

My Table Structure is this.

Now we will count how many student are passed & failed in the report footer. Look Like This

For This Output We need to use a Running Total Field.

Create a running total
>> Field to summarize : Result.Use Count for field.
Under Evaluate section: select "Use a formula".
Click on the icon next to this and write {result}='pass'.
Then it will only calculate the number of students Passed.
The same way applies to find the count of Failed students.