SharePoint list formatting extended title with icon in calendar view

Is it possible to expand the display of the element in the calendar view by an icon depending on the selection in a column?

In the Column View it was no problem, but to map the same on the Calendar View i have not been able to do it. Does anyone have an idea ?

...
{
            "elmType": "span",
            "style": {
              "padding-right": "5px",
              "display": "=if(indexOf([$Type], 'Workshop') != -1, 'flex', 'none')",
              "color": "=[@theme.palette.themePrimary]"
            },
            "attributes": {
              "iconName": "Add"
            }
          }
        ]
      },
      {
        "elmType": "span",
        "txtContent": "[$Title]"
      }