@eval with Observable in Interact

Specific Domains Visualization
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1

Hi,

I have a problem with Interact, where I don’t understand what is wrong. I have the following MWE.

I have a csv file with several columns that might look like this:

Result,A_Result,B_Result,C_Result
10,1,3,4
12,3,4,5
12,3,7,8
23,5,7,8
23,4,6,8

I want to plot the results and use interact to switch between the columns.

using CSV
using Interact
csvdata = CSV.File("test.csv")

parts =  [:all,:A,:B,:C]

ui = @manipulate for part in parts
      if part == :all
             result = csvdata.Result
      else
            println(part)
            @eval  result  = csvdata.$(Symbol("$(part)",'_',"Result"))
      end
      p1 = plot(result)
end

The :all column works fine, but for the other columns it doesn’t and I get an error (UndefVarError: result not defined).
The issue appears both in IJulia notebook and when I use Blink.

If I remove the if-else block and do it like this:

using CSV
using Interact
csvdata = CSV.File("test.csv")

parts =  [:A,:B,:C]

ui = @manipulate for part in parts
      @eval  result  = csvdata.$(Symbol("$(part)",'_',"Result"))
      p1 = plot(result)
end

It works as expected.
Am I missing anything?

I am using julia 1.5.3
hagi