Alert Composer using Resource personBenefitEnrollments

Summary:

I am wanting to have an email alert send out to employees using Alerts Composer if they have a Salary Change Life Event process AND currently enrolled in Voluntary Short Term Disability. I do not want for the email alert to be sent if the person was NOT previously enrolled in Voluntary Short Term Disability. Is this possible?

I am using Resources = personBenefitEnrollments

This is my current expression:

${PlanName} = 'Voluntary Short Term Disability' AND ${LifeEventName} = 'Salary Change'

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