[RESOLVED] [2.0] Access MdiParent's variable

[ini_hendry]

Suppose i have an Mdi ..
this Main1 act as the MdiParent..

public partial class Main1 : Form
{
             public int a = 1;
             Form1 form1 = new Form1();
             ....
}

now, from the child (form1) , i need to change the variable of "a".
i know that this is simple, but i've been trying and get zero results.
Can anybody give a real code ?