how to rename a gui

I have a GUI and have named it as final ,now i want to change it to

Biometric Solution by M.JOSE

if i save as like this i get error saying it is not a valid guide name

plz tell how to rectify it

Answer 1

[Azzi Abdelmalek]

Biometric_Solution_by_M_JOSE

[Pat]

thanks Azzi is is possible to do without that special character

[Azzi Abdelmalek]

You can not do it with space or dot