Condition for Fullfillment without Tracking Code / Tracking nomber empty

[kinderparties]

 Dear Community 

I would like to start a flow, where I get an internal Email, if the fullfillment is created without tracking code. 

I know how to set up the flow, but I do not find the correct condition for empty tracking nomber. (I made a screenshot to show which field of the backend I would like to use in the condition for the flow. )

I tried trackingInfo_item.number, but it does not work, so I made it wrong.

Can you help me please?

Thank you very much

Vanessa

 

[paul_n]

That is the correct field. However, an order doesn't have fulfillments until they have created. So most likely when you ran this condition the fulfillments object didn't even exist yet, which means it never go to your number check. 

What trigger are you using and what else is in the workflow?