it will not execute it throws sum error .can anyone give the solution for this problem?

-- ================================================
-- Template generated from Template Explorer using:
-- Create Trigger (New Menu).SQL
--
-- Use the Specify Values for Template Parameters 
-- command (Ctrl-Shift-M) to fill in the parameter 
-- values below.
--
-- See additional Create Trigger templates for more
-- examples of different Trigger statements.
--
-- This block of comments will not be included in
-- the definition of the function.
-- ================================================
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO


CREATE TRIGGER [dbo].[OnlineApplication] 
   ON [dbo].[bonus] 
   AFTER UPDATE
AS 
if(exists(select * from OnlineApplication where RefCode='Muthukrishnan1001')




select count(RefCode) from OnlineApplication where RefCode='Muthukrishnan1001'
end
if count='1'
begin
update bonus set Bonus=500
end
else
begin
update bonus set  Bonus=100


end




error is
Msg 156, Level 15, State 1, Procedure OnlineApplication, Line 9
Incorrect syntax near the keyword 'select'.
Msg 156, Level 15, State 1, Procedure OnlineApplication, Line 12
Incorrect syntax near the keyword 'if'.