Regarding the problem of using an external MIDI device to request commands when CUBASE changes the time signature

I output “MIDI TIMECODE” and “MIDI CLOCK”. When using an external MIDI device, I can retrieve the output of the CUBASE command, but there is nothing about the time signature because I need to change the time signature and need to synchronize with my external MIDI device;

I checked the MIDI protocol, -------

FF 58 04 nn dd cc bb
Time signature is expressed as 4 numbers. nn and dd represent the “numerator” and “denominator” of the signature as notated on sheet music. The denominator is a negative power of 2: 2 = quarter note, 3 = eighth, etc ------

But in the output command of CUBASE, there is no information about them,
please help me, thank you