Application.Variable is not updating in application.cfm file

Dear All.,

I have been trying to update a application variable in my application.cfm  and it is not working.

APPLICATION.old_variable = '1,2,3';

(I want to add 4,5,6 along with the above variable)

I did the applicationtimeout and it is working for 10 seconds and again the the old values '1,2,3' is coming.

Also i added a new application variable

APPLICATION.new_variable = '1,2,3';

But here what ever the change i did and update the applicationtimeout  it is working well.

My case is the application variable is ONLY NOT UPDATING TO THE OLD VARIABLES