Reset Variable in ICS

Content

I have created a Boolean variable, which needs to perform actions as given below:

 

if (true)

{

perform action

reset to false

}

else

{

perform action

}

This will enable me to have the first line of code only once( header to display only one)

but i am not able to re-assign the same variable to false.

is there any way to reset/reassign/ update the variables.