A single document procedures, the use of Ribbon, one of the buttons to set the shortcut, F5 method is defined in accelerators resources VK_F5, binding, and button ID can be normal response, the problem is now unable to change into other keys,
Amend the original accelerators resources into VK_F8, but now the F5 and F8 can normal response, the mouse on the button, there will be a prompt (F5), but there was no set shortcut button properties, don't know where to modify, search F5 throughout the project, can only find the accelerator key resources in the code, no other code indicates that the button and F5 binding, it's strange how bound up, before

As shown in figure

Accelerate the F8 key data the button in the binding, but actually there is a hidden code displayed it binding the F5, anyone know where I can change?