Siri set timer problem.

Hello. I have some problems with Siri when starting the timer for the first time. When I say Siri (in Russian) - Set the timer to twenty minutes (for example), she answers me - I have a problem, try again, but the timer is already running. If I repeat the request, Siri says the timer is already running. And so every time. How to make Siri understand the request to set the timer for the first time? Thanks.