Validation field with Groovy to specify custom field came to diferents issuetypes

[Andréa PL.]

Conditional validation field with Groovy to provide  provide a value during the transition to  specify custom fields and to diferents issuetypes. What I doing wrong?

def issueTypeC = issue.issueType.name
def tiposPermitidos = ["Bug", "Improvement", "Support"]
issueTypeC in tiposPermitidos

issue.getAsString("customfield_123")=="EquipeA" && issueTypeC