Problem with label combobox

I have a combobox with width=200. When change the to fullscreen, I change the width to 300 in code, but the label not change width ):

I have images to demonstrate:

Quote

<events onenterfullscreen="set_layout_size(false, true);" onexitfullscreen ="set_layout_size(true, false);" />

<action name="set_layout_size">
if (%1 == false, set(plugin[combobox].rowcount, 20);
set(plugin[combobox].dropdownwidth, 300);
set(plugin[combobox].width, 300);
);
if (%2 == false, set(plugin[combobox].rowcount, 5);
set(plugin[combobox].dropdownwidth, 200);
set(plugin[combobox].width, 200);
);
</action>

<plugin name="combobox" url="plugins/combobox.swf" alturl="plugins/combobox.js" keep="true" align="righttop" x="10" y="10" dropdownwidth="200" rowcount="5" onloaded="listComboboxScenes();" />

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What I have to do?

(Sorry for my poor english)

Thanks!