Variable error from popup

Hello
I hava a problem using pop-up with title window manager. I get the following error:
TypeError: Error #1009: cannot access a property or method of a null object reference.
I am trying to create a popup that asks for credentials and then use them in the main application window.
The code is attached below.

Looking at the code, it seems that there is a problem of variable scope. Your code defines the pop window within the displayPopUp method... var pop: LoginForm = LoginForm (PopUpManager.createPopUp (this, LoginForm, true));

Since it is defined in the method displayPopUp with a variable of the pop name, the variable is not available for something outside the method which means that the submitData method does not know your variable to pop.

If you set your pop variable as an instance of the window all methods will have access to the variable.

Tags: Flex

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