   |> Repo.insert!
 end
 
-if !Repo.get_by(SystemVariable, key: "PROGRAM_EMAIL") do
+unless Repo.get_by(SystemVariable, key: "PROGRAM_EMAIL") do
   %SystemVariable{}
   |> SystemVariable.changeset(
       %{

  |> Repo.insert!
end

if !Repo.get_by(SystemVariable, key: "PROGRAM_ADDRESS") do
  %SystemVariable{}
  |> SystemVariable.changeset(
      %{

  |> Repo.insert!
end

unless Repo.get_by(SystemVariable, key: "NOTIFICATION_JOB_EXECUTED_AT") do
  %SystemVariable{}
  |> SystemVariable.changeset(
      %{
