How do I make an expression to load a global variable with a name set by another global variable

I’m trying to display the value of a number variable in an text element.
The name of the variable should be set with another variable, but it doesn’t work.
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I hope that someone may find the answer.

You can only do that with structures or arrays.

GlobalVariableString(Structure[GlobalVariableString(ChildName)])

Or just Structure[ChildName] if your variables are declared.