SQL server Script in KAtalon

Hi All,
could you please help me with this if you can… so i have a script connecting to the sql database. the connection works fine but when i try to execute the script i get an error:

So i created a Global Variable which is a username.

CustomKeywords.‘mydatabaseConnection.FicaMe.execute’("UPDATE [Trading].[dbo].[Users] SET UserStatusID = 2, ficaRegistered = 1 WHERE [Login] = "+ GlobalVariable.username )

This is the error i get :

com.microsoft.sqlserver.jdbc.SQLServerException: Invalid column name ‘MyUsername_1534249786’.

and note that MyUsername is the username which i created as a global variable.

Kind regards,