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Hello,
I have 8 similar screens with same calculations in each and a final screen with sums of data
The user must fill the first one but the others are optional.
How can I prevent the app to calculate each and all screens, even if inputs are empty?
Thank you in advance for your tips!
You could use different variables.
Set them in the OnStart Property to zero and as soon as the user filled in all the information or if the user hits the next button set the Variable to the Response of the screen.
In your final screen just Add all the variables together (Each screen needs its own variable).