Using custom shortcut keys while table of attributes is active window

I have a custom button which is made using python add-in.

I add this button in arcgis desktop and assign a new shortcut key for this button.

The problem is this button should be used while table of attributes is active.
But shortcut key only works when main acrmap window is active.

Is there any way to assign shortcut keys for custom buttons and make them work while table of atributes is active?