[2021-01-10_LI] To display the output of the calculator I created a Note question and add ${calculation} but is sowing NaN instead of value

Hello, NaN means Not a Number. So there is at least one element in your calculation which evaluates to ‘’. Use coalesce( ) to control this effect. See https://getodk.github.io/xforms-spec/#fn:coalesce

Calculating a value from NaN

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Kal_Lam January 11, 2021, 3:49am 3

Hi @rahul_521,

Maybe you could also have a look at a simple workaround discussed previously using coalesce: