I'm trying to create a conditional signature using Liquid Markup with Dynamic content. Ticket field 22871957 is a multi-line custom field. For some reason, even when the string I'm searching for is contained in the field, the output is still "Not Canada Post". I always get that output in my tests. Any ideas what's wrong with the code below?
```
{% if ticket.ticket_field_22871957 contains 'Country / State: Canada' %}
Promote Canada Post
{% else %}
Not Canada Post
{% endif %}
```