Check if a numeric field has a value

Hello,

I have a numeric field and I want another field to become a mandatory field
as soon as a number is in this numeric field. Unfortunately I did not find a
solution anywhere ...

Best regards,
Daniel

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Hi Daniel,

You can use the expression `$number/string() castable as xs:decimal`,
assuming your number field is named `number`, which you put in the
Validations and Alerts tab, as shown below. And the GIF linked below also
shows what this lookalike at runtime.

control-settings.png
<http://discuss.orbeon.com/file/t119778/control-settings.png>  
required-if-number.gif
<http://discuss.orbeon.com/file/t119778/required-if-number.gif>  

You'll let me know if this works for you,

-Alex

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Hi Daniel,

Did you get a chance to try making the field required based on formula? If so did that work for you?

-Alex

Hi Alex

Perfect, it works fine. Thank you.

Best regards, Daniel

Perfect Daniel, I'm glad that `$number/string() castable as xs:decimal` worked, and thank you for the confirmation.

-Alex