# GAP and CPUTime in JuMP v0.19

**URL:** <https://discourse.julialang.org/t/gap-and-cputime-in-jump-v0-19/22521>\
**Category:** Optimization (Mathematical)\
**Created:** [March 29, 2019, 11:53pm UTC](https://discourse.julialang.org/t/gap-and-cputime-in-jump-v0-19/22521 "2019-03-29T23:53:04Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![angeloaliano1](https://avatars.discourse-cdn.com/v4/letter/a/7ea924/32.png) [@angeloaliano1](https://discourse.julialang.org/u/angeloaliano1)\
**Post date:** [March 31, 2019, 1:25pm UTC](https://discourse.julialang.org/t/gap-and-cputime-in-jump-v0-19/22521/6 "2019-03-31T13:25:29Z")

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Hello friend,  
I tried to use MOI.get(modelo, MOI.RelativeGap()), but doesn’t work. The error:  
ERROR: MethodError: no method matching get\_relative\_mip\_gap(::CPLEX.Optimizer) appears.  
How can I solve this problem?  
Hugs,

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_[View the full topic](https://discourse.julialang.org/t/gap-and-cputime-in-jump-v0-19/22521)._