Compute \tempo from variables

[David Hobach]

Hi all,

I'd like to compute the \tempo directive from variables, but couldn't yet 
figure out how to do it.

For example, let's say I have two variables such as
myTempoBase = 4
myTempo = 80

Then I'd like to do something such as
global = {
        \key c \major
        \time 4/4
        \tempo \myTempoBase = \myTempo
}

I'd expect it to resolve to \tempo 4 = 80. The above code however fails on 
2.24.1.

Any ideas?

Thanks in advance & Best Regards
David

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