Save Input Data to Excel in Siena

Question

Guys,
Quick (and hopefully) easy question regarding Project Siena and Excel:
I have a single screen (Screen1) and an Input Text Field (Input1) and a Gallery (Gallery1):
I am wanting to have a user enter a numeric value into Input1, say 100,000.
Once that value is entered, I would like to save it in Excel, conduct numerous calculations on the Excel value (Input1)  and then present the new numbers to the user in Gallery1.
My question: Is there a way to save inputted data into an Excel data source?
Thanks,
Chris

Answer 1

Chris,
   You can save data in Siena, you just can't write that data to a file such as Excel right now.   If I understand you correctly, you should try the following:
Change the OnChange property of Input1 to:
UpdateContext({MyValue: Value(Input1!Text)/2})
Explanation:
This creates and updates a variable called MyValue.   The name is unimportant, and you can call it whatever you want, as long as you use the same name when you reference it elsewhere.
It sets the value of MyValue to whatever the user inputs in Input1 divided by 2.   The actual math doesn't have to be what I wrote, this is just an easy example.  
Create a Label and set its Text to:
MyValue
This will display the value.  
To get this to display on another page, you need to pass the context.  To do this, create a button, and set its OnSelect property to:
Navigate(Screen2,"",{MyValue: MyValue})
This Navigates to the page called Screen2, and sets MyValue (for Screen2) to MyValue (from Screen1).
This is assuming you only want one number stored, you can also do all of the above using collect().   If you use a collection, you won't have to pass the context between screens.   A list of Functional References can be found
HERE:
-Bruton
Just let us know if you also want an example of using this in a collection.