Gumball and T-Splines keyboard short-cut

Rhino Rhino for Windows
1

Just started trying the T-Splines plugin with Rhino 5. Can’t seem to create a keyboard shortcut to turn Gumball on and off. Tried to create one with the Ctrl+R key (empty now)
since it’s next to my Ctrl+Q “! _RelocateGumball” which works. Can anyone help

2

Shortcut Ctrl+R with Command
_Gumball T
(T mean’s Toggle On/Off)

3

Thanks so much works perfectly