Evals some Ruby code contained within the process definition or within the workitem.

The code is evaluated at a SAFE level of 3.

If the :ruby_eval_allowed isn‘t set to true (engine.application_context[:ruby_eval_allowed] = true), this expression will throw an exception at apply.

some examples :

    <reval>
        workitem.customer_name = "doug"
        # or for short
        wi.customer_address = "midtown 21_21 design"
    </reval>

in a Ruby process definition :

    sequence do
        _set :field => "customer" do
            reval """
                {
                    :name => "Cheezburger",
                    :age => 34,
                    :comment => "I can haz ?",
                    :timestamp => Time.now.to_s
                }
            """
        end
    end

Don‘t embed too much Ruby into your process definitions, it might hurt…

Reval can also be used with the ‘code’ attribute (or ‘field-code’ or ‘variable-code’) :

    <reval field-code="f0" />

to eval the Ruby code held in the field named "f0".