Problem when Google home reads temperature

Hi. I am verry new to Node-Red an I need a little help. I want Google home to read out the outside temperature like this: " The temperature outside is minus one point nine degress", but the message from Google home is “The temperature outside is first nine degress”.
What am i doing wrong?

could be a long shot but maybe in your country you use comma instead of dot? if you don’t need to be that precise, you can round the temperature to an integer. or replace dot with comma.

You could try to use a Change node to find/replace the “.” with “point”