Ok, I will explain more and sorry for my English :(
I added a new pane to my current skin, by adding the following code to page-admin.ascx :
then when I tried to add a module to this pane (Pane1), from the Admin Control Panel as the following steps :
1- Login as super account
2- select the page which I want to add the module to it (let's say it is Home)
3- from the control panel (Common Task), I selected my Module (called X) from Module list
4- select "Pane1" from Pane list
5- press (Add Module) button
No thing happened, and the selected module not added to the selected Pane
also I note that if I added a Module to the ContentPane, it is worked fine and the module will be in the ContentPane, but if I select any other Pane it will not work and the selected module will not add.
I'm using DNN 5.6
please I need a solution for this issue