I am only leaving this here in case another nEwB like myself get's stuck on something so simple.
All I was trying to do was set the timer widget from another variable on another page. I struggled because I could not find an answer. I messed with page state variables and everything. When AI suggested adding a dart code, I protested. Surely there is a simpler way.
There was.
All I needed to resolve this was to know that this little orange symbol was the answer.
It is located here:
Let's back up. First click on the Timer Widget showing on your app page. It will highlight in green.
Then on the right side for properties, scroll down to the Countdown Time (ms) and click the orange.
That will open the window that allows you to enter the simple expression you wanted all along.
You will have to "+ Add argument" to define the variable you passed from the previous page. Once you do, you can type the expression in, test the code, and hit confirm.
That's it.
QED.
I hope you find this way before I did.
