Using variables

Hi,

I run a code that have form with button, when I press the button I'm doing operations in variables,

I want to use those variables after I use the button, for example:

1. ..........

2. ..........

3. .........

4. $button.add_Click(

{

      $UserName="Danny"

      $UserQuotas=Get-Mailbox $UserName

}

)

5. doing operations on $UserQuotas

I get nothing when I'm doing operations on $UserQuotas (5)

how can I get the value out of the button "loop"?

thanks

Lior