Mail arrives with the variables not with the values

Hello, a template was associated for the creation of cases, the email arrives with the variables not with the values.
Hola $account_name,

Hemos recibido tu caso $acase_name (# $acase_case_number) on $acase_date_entered

Estatus $acase_status
Referencia $acase_case_number
Correo $account_email
Descripción $acase_description
Tipo $acase_type
Prioridad $acase_priority
Estado $acase_state

Por favor, cual es tu version de SuiteCRM?

Version 7.10.7
Sugar Version 6.5.25 (Build 344)