Need help combining Float value using slider widget to String to try and set max FPS

with the picture i have linked it shows that i have tried to append the value of the slider with the T.MaxFPS command, can someone explain why it isnt working?
Thanks

Because:

0.4454041 t.MaxFPS { }

is not a valid command. Besides, slider spits out a range of 0-1, so max you can get is a sluggish slideshow.

You probably meant this:

There is a space after t.MaxFPS.