Finding difficulty in creating SQL Trigger : I am writing a SQL query (2012) to create a trigger but it gives me an error. I have tried several different ways. Find the code that I am using

CREATE TRIGGER after_table_update
After_hsi.keyrecorddata202_UPDATE  FOR EACH ROW
Begin

UPDATE hsi.keyrecorddata202 
set kg563 = hsi.keyrecorddata202.kg275 * ['Price_List$'].Unitprice
FROM hsi.keyrecorddata202 INNER JOIN ['Price_List$'] ON hsi.keyrecorddata202.kg487 = ['Price_List$'].NO#
where kg568 = 'FOOD'

END;