This is old but I ran into the same… here’s my work around…
${__from:date:DD-MM-YYYY HH.mm} To ${__to:date:DD-MM-YYYY HH.mm}
becomes
${__from:date:DD-MM-YYYY HH}:${__from:date:mm} To ${__to:date:DD-MM-YYYY HH}:${__to:date:mm}
split your output and add the literal : so it’s not confused as a variable modifier