Midi SysEx Command

I want to send system exclusive messages for Start (FA) and Stop (FC). The MIDI SysEx Editor does only accepts entries to a maximum of 7F (decimal 127).

What am I doing wrong?

Each field in the sysex dialog is just 1 byte. 00 through 7F.

It’s been a while since I’ve used it but I think the string needs to be: F0 7F 49 F7

Where F0 is hello I am sysex,
7F (Dec. 127) + 49(Dec. 73) = FA,
F7 Sysex message complete.

That work?

Thank you for clarifying that Steve. It sets me in the right direction and I will try that today.