# Can't get debugging breakpoint in the right frame

**URL:** <https://discourse.julialang.org/t/cant-get-debugging-breakpoint-in-the-right-frame/40613>\
**Category:** General Usage\
**Created:** [June 2, 2020, 1:56pm UTC](https://discourse.julialang.org/t/cant-get-debugging-breakpoint-in-the-right-frame/40613 "2020-06-02T13:56:48Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![robsmith11](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/robsmith11/32/29641_2.png) [@robsmith11](https://discourse.julialang.org/u/robsmith11)\
**Post date:** [June 2, 2020, 1:56pm UTC](https://discourse.julialang.org/t/cant-get-debugging-breakpoint-in-the-right-frame/40613/1 "2020-06-02T13:56:48Z")

</div>

I’d like to interactively inspect the value of large struct at a certain point in the execution of my program. I am able to use JuliaInterpreter.jl to set a breakpoint, but it seems to be returning the wrong frame.

This minimal example where I’d like to inspect the value of `b` but am only able to do so for `a` demonstrates the issue:

```julia
julia> function f(x)
        a = x*rand()
        g(a)
       end
f (generic function with 1 method)

julia> function g(y)
        b = y*rand()
        @bp
        1/b
       end
g (generic function with 1 method)

julia> r = @interpret f(0.3)
(Frame for f(x) in Main at REPL[36]:1
  1 2 1 ─ %1 = (rand)()
  2 2 │ a = (*)(x, %1)
  3 3 │ %3 = (g)(a)
  4 3 └── return %3
x = 0.3
a = 0.0508096
callee: g(y) in Main at REPL[37]:1, breakpoint(g(y) in Main at REPL[37]:1, line 3))

julia> JuliaInterpreter.eval_code(r[1], "b")
ERROR: UndefVarError: b not defined
Stacktrace:
 [1] top-level scope at none:1
 [2] eval at ./boot.jl:331 [inlined]
 [3] eval_code(::Frame, ::Expr) at /home/me/.julia/packages/JuliaInterpreter/owKmt/src/utils.jl:525
 [4] eval_code(::Frame, ::String) at /home/me/.julia/packages/JuliaInterpreter/owKmt/src/utils.jl:502
 [5] top-level scope at REPL[39]:1

julia> JuliaInterpreter.eval_code(r[1], "a")
0.05080960253582343

```