Combo Box Won't Update

I can't get my combo box to change it's list. It always displays the original list. I know that this code is being executed, cause I verified it with the debugger. I can't understand this.

String[] stringArray ={"Why","Can't","I","Change","You"};

cboMessageHeader =new javax.swing.JComboBox();

cboMessageHeader.setModel(new javax.swing.DefaultComboBoxModel(stringArray));

I've also tried

cboMessageHeader =new javax.swing.JComboBox(stringArray );

And

cboMessageHeader =new JComboBox(new EnumComboBoxModel(CANHeader.class));

Which is what I really want to do (use the enum to create the list).

Ahh yes and thanks to anyone who responds to this, i'm pretty frustrated at the moment and help is appreciated,

Nathan

[1133 byte] By [Nathan_ValidMana] at [2007-10-3 10:28:45]