# Symbolics function

**URL:** <https://discourse.julialang.org/t/symbolics-function/82226>\
**Category:** General Usage\
**Tags:** symbolics\
**Created:** [June 4, 2022, 3:06am UTC](https://discourse.julialang.org/t/symbolics-function/82226 "2022-06-04T03:06:39Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jerry\_ji](https://avatars.discourse-cdn.com/v4/letter/j/e36b37/32.png) [@jerry\_ji](https://discourse.julialang.org/u/jerry_ji)\
**Post date:** [June 4, 2022, 3:06am UTC](https://discourse.julialang.org/t/symbolics-function/82226/1 "2022-06-04T03:06:39Z")

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Hi I trying to building an function with Symbolics.jl package, instead of output an Vector{Bool}, folloing code output an Vector{SymbolicUtils.Term{Bool, Nothing}}.

> using Symbolics
> 
> N=12
> 
> @variables t c[1:N] Γ(t,c)
> 
> Γ=t.\>c
> 
> f\_expr=build\_function(Γ,t,c)
> 
> f=eval(f\_expr)
> 
> f(5.0,rand(N)\*5)

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<div class="post-metadata">

**Author:** ![ChrisRackauckas](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/chrisrackauckas/32/77_2.png) [@ChrisRackauckas](https://discourse.julialang.org/u/ChrisRackauckas)\
**Post date:** [June 4, 2022, 11:59am UTC](https://discourse.julialang.org/t/symbolics-function/82226/2 "2022-06-04T11:59:53Z")

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That looks like bug I think? Can you open an issue?