Case statement in DAX

Hi

Here i have a DAX Statement as

CASE (WHEN stricker<>'' OR NONSTRIKER<>'' THEN (RUNS + (CASE WHEN BYES = 0 AND LEGBYES = 0 THEN OVERTHROW ELSE 0 END))
WHEN @BOWLER<>'' THEN (RUNS + WIDE+ (CASE WHEN BALL.NOBALL > 0 AND (BALL.BYES > 0 OR BALL.LEGBYES > 0) THEN BALL.BYES + BALL.NOBALL + BALL.LEGBYES
WHEN BALL.NOBALL > 0 AND BALL.BYES = 0 AND BALL.LEGBYES = 0 THEN BALL.NOBALL
ELSE 0 END) + (CASE WHEN BYES = 0 AND LEGBYES = 0 THEN OVERTHROW ELSE 0 END))
ELSE GRANDTOTAL END ) AS RUNS

But it is showing as error in my Dax i am  unable to find out the error why it is not executing the statement

When i am