Format for Total max backup speed for local network wrong

I cannot seem to figure this out. I copied directly from the manual and it still yells at me. Do I need to use Quotes?

The error is not referencing the field indicated in the above message. It is indicating a field in the Local/Passive clients tab:

When I cleared the setting, the error went away. Still not sure what is wrong with the format as it follows the format in the manual… but at least I can get the error to go away now.