Display Image column as main image in embedded app view problem

[eldderri]

Dear friends, 

In my app I have a table :ChecklistHistory with a column named VehicleImage which fetches image from VehicleTypeMenu table based on VehicleType using this formula:

LOOKUP(
LOOKUP([ChecklistID], "Checklist", "ChecklistID", "VehicleType"),
"VehicleTypeMenu",
"VehicleTypeName",
"VehiclePhoto"
)

When I used this column as main image in my embedded app view , it does display in the detail view and does not in the embedded app view email:

What shall I do to make it displayed in the embedded appview email?

Best regards,