# How to constraint on calculation

**URL:** <https://forum.getodk.org/t/how-to-constraint-on-calculation/23691>\
**Category:** Support\
**Tags:** form-design, odk-xlsform\
**Created:** [December 4, 2019, 6:40pm UTC](https://forum.getodk.org/t/how-to-constraint-on-calculation/23691 "2019-12-04T18:40:39Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![noman.s2325](https://getodk.b-cdn.net/user_avatar/forum.getodk.org/noman.s2325/32/8842_2.png) [@noman.s2325](https://forum.getodk.org/u/noman.s2325)\
**Post date:** [December 5, 2019, 12:58pm UTC](https://forum.getodk.org/t/how-to-constraint-on-calculation/23691/6 "2019-12-05T12:58:10Z")

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could you please provide some sample file plz..

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