More than 10 menu positions for extended menu

Hello,

I need to have more than 10 menu positions for extended menu, actually limited to 10 — from menu1 to menu10.

I've tried to add eight new positions in templateDetails.xml (template folder), like this :

<position>menu11</position>
<position>menu12</position>
<position>menu13</position>
<position>menu14</position>
<position>menu15</position>
<position>menu16</position>
<position>menu17</position>
<position>menu18</position>

and also like this in plugins/system/gkextmenu/parameters.xml :

<option value="menu11">menu11</option>
<option value="menu12">menu12</option>
<option value="menu13">menu13</option>
<option value="menu14">menu14</option>
<option value="menu15">menu15</option>
<option value="menu16">menu16</option>
<option value="menu17">menu17</option>
<option value="menu18">menu18</option>

That seemed to work at first, but when I save the menu, the menu module selected is always menu18 :-\

Can you see what I am doing wrong ?

Thanks in advance.

Best regards.

...Sorry : my codes are working well (mistake in parameters.xml).