How to set up yup validation conditionals?

Question

I have a set of data that i'm tring to validate; It have two fields: "citiesProvided" and "servicesProvided" they are dependent of "LegalCorrespondenceService" that is a array with just one string with the value "true" or "false" Like represented below:

Structure of the data

When "true" the validation of the other fields need to be done, otherwise with "false" not. How can i do this conditional validation with yup?

this the code that I had no result:

const schema = Yup.object().shape({
          
          JuridicCorrespondence: Yup.array().of(
            Yup.object().shape({
              LegalCorrespondenceService: Yup.array()
                .of(Yup.boolean())
                .length(1, 'Escolha uma opção.'),
              citiesProvided: Yup.array().when(['LegalCorrespondenceService'], {
                is: 'true',
                then: Yup.array()
                  .of(Yup.string())
                  .length(1, 'Escolha uma opção.')
              }),

              servicesProvided: Yup.array().when(['LegalCorrespondenceService'], {
                is: 'true',
                then: Yup.array()
                  .of(Yup.string())
                  .length(1, 'Escolha uma opção.')
              }),
            })
          )
        });