Hi,

Well, you have a couple of options depending on what you want to do:

$subname = 'foo';

# Same as Modname->foo(@params);
Modname->$subname(@params);

# Same as Modname::foo(@params);
"Modname::$subname"->(@params);
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PS: one other note, if you can use subreferences ($sub = \ &Modname::foo), that tends to be a little safer. Just make sure that you are not using a variable that came from a user/webform/file without checking it first.