# Check if a solver supports VariablePrimalStart

**URL:** <https://discourse.julialang.org/t/check-if-a-solver-supports-variableprimalstart/37015>\
**Category:** Optimization (Mathematical)\
**Tags:** question\
**Created:** [April 4, 2020, 12:20pm UTC](https://discourse.julialang.org/t/check-if-a-solver-supports-variableprimalstart/37015 "2020-04-04T12:20:57Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![ohmsweetohm1](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/ohmsweetohm1/32/49126_2.png) [@ohmsweetohm1](https://discourse.julialang.org/u/ohmsweetohm1)\
**Post date:** [April 4, 2020, 12:20pm UTC](https://discourse.julialang.org/t/check-if-a-solver-supports-variableprimalstart/37015/1 "2020-04-04T12:20:57Z")

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Is there a way to check if a solver supports `MOI.VariablePrimalStart`?

Something like this:

```julia
MOI.supports(JuMP.backend(m), MOI.VariablePrimalStart)

```

but it seems that I’m missing something:

---

<div class="post-metadata">

**Author:** ![odow](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/odow/32/28685_2.png) [@odow](https://discourse.julialang.org/u/odow)\
**Post date:** [April 4, 2020, 9:32pm UTC](https://discourse.julialang.org/t/check-if-a-solver-supports-variableprimalstart/37015/2 "2020-04-04T21:32:49Z")

</div>

You’re looking for:

```nohighlight
MOI.supports(backend(model), MOI.VariablePrimalStart(), MOI.VariableIndex)

```