A simple test follows:
${message}
Now show the basic values:
${number1}, ${number2}, ${number3}
${string1}, ${string2}, ${string3}
Now as strings:
${asString(number1)}, ${asString(number2)}, ${asString(number3)}
${asString(string1)}, ${asString(string2)}, ${asString(string3)}
Now as numbers:
${asNumber(number1)}, ${asNumber(number2)}, ${asNumber(number3)}
${asNumber(string1)}, ${asNumber(string2)}, ${asNumber(string3)}
Native string conversion:
${number1 + ""}, ${number2 + ""}, ${number3 + ""}
${string1 + ""}, ${string2 + ""}, ${string3 + ""}
Native number conversion:
${number1 + 0}, ${number2 + 0}, ${number3 + 0}
${string1 + 0}, ${string2 + 0}, ${string3 + 0}
Non-trivial example:
${asNumber( number3 + 0 ) + 10}