How can I design a 3 minute timer?

How can I design a 3 minute timer?

One button, one label, two global variable and a clock is enough

On button click to start timer, use clock to get current milli. And add 180000 , save it as final milli value and set clock to timer enabled to true. Set interval as 1000

When clock timers
Set final timer to get final timer -1000
If final timer =0
Then set clock to timer false

Show us if you tried anything

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This is what I did, is it correct?

I found this figure is it correct?

Did you test it?

Yes but it doesn’t work

Something like this?

(Note: Rendezvous Server were offline)

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Ok thank you

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