Help with templating in lovelace card mod

I am trying to add templates to the card mod addon for home assistant and having a hard time.

I would assume the template would be something like this (lines between [/u]** below) but it doesn’t result in any change. Would anyone be able to point me in the right direction with this?

- type: custom:mushroom-template-card
            primary: Name
            secondary: ''
            icon: |2-
               {% if is_state('person.Name', 'not_home') %}
                          mdi:home-export-outline
              {% elif is_state('person.Name', 'Work') %}
                          mdi:office-building
                        {%else%}
                          mdi:home
                        {%endif%}
            entity: person.Name
            icon_color: |2-
               {% if is_state('person.Name', 'not_home') %}
                          red
               {% elif is_state('person.Name', 'Work') %}
                          blue
                        {%else%}
                          green
                        {%endif%}
            card_mod:
              style: |
                ha-card {
                  --icon-size: 40px;
**[u]                  {% if is_state('person.Name', 'Work') %}          [/u]**
**[u]                      --ha-card-background: rgba(0, 0, 0, 0);         [/u]**
**[u]                  {%else%}                                   [/u]**
**[u]                      --ha-card-background: rgba(12, 12, 12, 0);   [/u]**
**[u]                  {%endif%}                                [/u]**
                  --secondary-text-color: white;
                    border: solid 1px grey;
                    border-radius: 25px;
                }

Put the template code after the --ha-card-background: , works for me.