Logic question

You'll need to use some form logic to do this. The XML will look like
this...

If you put the contents of the constraint in the XLS file, it should do
what you want...

So far I have successfully develop the application, your user manual guide

··· > was very helpful. One thing I am stuck at is: let me explain the problem > that I am facing with an example:**** > > ** ** > > Question 1. What if your *FIRST > preference* in terms of food commodities? (Single select question)**** > > Possible option: a. Wheat flour (White or > brown)**** > > b. Rice*** > * > > c. High > energy biscuits**** > > d. Pulses > (yellow split peas)**** > > e. Pulses > (chick pea, dhal channa)**** > > f. Ghee*** > * > > g. Sugar** > ** > > Question 2. What if your *SECOND preference* in > terms of food commodities? (Single select question)**** > > Possible option: a. Wheat flour (White or > brown)**** > > b. Rice*** > * > > c. High > energy biscuits**** > > d. Pulses > (yellow split peas)**** > > e. Pulses > (chick pea, dhal channa)**** > > f. Ghee*** > * > > g. Sugar** > ** > > Question 3. What if your *THIRD preference* in > terms of food commodities? (Single select question)**** > > Possible option: a. Wheat flour (White or > brown)**** > > b. Rice*** > * > > c. High > energy biscuits**** > > d. Pulses > (yellow split peas)**** > > e. Pulses > (chick pea, dhal channa)**** > > f. Ghee*** > * > > g. Sugar** > ** > > ** ** > > Now if the data entry personnel selects “Sugar” as the first preference, > he should not be allowed by the data entry application to select sugar > again as second or third preference. I am unable to do this in ODK excel > sheet form. I have previously developed data entry application in CsPro, > and in that I could do this coding. Will your technical team be kind enough > to help me in this? >