Inject preset numbers at different times of day

[Colin]

@Paul-Reed

I'm getting around the 'ramp' problem by setting 2 values very close to each other.

From memory I thought you could make the timestamps the same to get an instantaneous change, so in your example
0000hrs == 45
0400hrs == 45
0400hrs == 64
0500hrs == 64
0500hrs == 55
etc, etc...

but I may be mistaken.