Variable that was set in Header and Modified the variable between start and end body

User_0E2YR

I have a requirement where page footer need to display a message when ever in that page we have a special character on one of the field.

Here

1) set a variable Flag as 0 in header

2)Mofied the flag from 0 to 1 in start and end body whenever i am appending the special character to the field

3)Trying to access the flag in footer and if the flag is 0 then print the message

But though i set the falg variable to 1 in body in footer it is still showing as 0.

User_0E2YR

And i would like to reset the value of flag 0 in header on every new page