Calculation in odk xls form

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1

I hv made the odk xls questioner in that one right question carries 4 mark and negative question carries negative 1 (-1) marks done successfully....but any one of question not attempt carry 0 mark this is not i understood how to calculate.....please help me regarding these issue how to slove.

2

You probably need to turn your 'not attempt' responses explicitly into 0. See https://docs.opendatakit.org/form-logic/#empty-values-in-math

3

can you give some example xls form...because I have an error org.javarosa.xpath.parser.ast.ASTNodeAbstractExpr@5c0369c4 in expression if( ${que1} =2,4(if( ${que1} ="",0,-1)))

4

Please help me regarding above issue

5

try

if(${que1}=2, 4, if(${que1}='', 0, -1))

6

thank you so much sir................