I am trying to find the list of objects to be used in my emails templates.

I have create a new text field in my Stock.Transfer Model (Outbound Delivery) called "x_recylingcode". I am trying to to find how to call this field in my email templates.

I went to Settings -> Technical -> Database Structure -> Fields

I search for x_recylingcode. and found that the Model is "Transfer".

I have tried different options to display the value in my email like: 

${object.transfer.x_recylingcode}, ${object.x_recylingcode}, ${object.stock.transfer.x_recylingcode}, 

None of them return me the value of the the field.

Can anyone explain how to find the name of the object to be used in my emails ? 

Thanks,
Dan