Set panel size

Hi all,

     I have set min-size for extension panel but that did not working in after effects but the same works in indesign. Could somebody helps me to do this?

<Geometry>     <Size>          <Height>300</Height>          <Width>760</Width>     </Size>     <MaxSize>          <Height>350</Height>          <Width>760</Width>     </MaxSize>     <MinSize>          <Height>300</Height>          <Width>760</Width>     </MinSize></Geometry>

Thanks for any help,

Sasi