Can't pass a document via start process

Question

Hi! 
 As you can see from the screens, I pass a document from the interface to a start process and I can see it in the process history, but for some reason it results empty in the "variables" tab. I don't get why

Harsha Sharma · Answer

Are you having a user input task in the process after start node? I can see initially the cancel is blank ( in process history) but in variables it has value. So continue checking in history after which node execution does document becomes blank.

Shubham Aware · Answer

The document is passed correctly at start but gets cleared or overwritten later in the process. Check for any nodes or logic resetting the variable after the start event.
Still not able to figure it out. Please share the process flow snapshot and details

David Jimenez · Answer

Check input variables from interfaces... 
 
 Are you using hidden variables?

anmolvijayvergiya · Answer

Hello, Can you check have to check the " Allow the value for the variable to be provided when starting a process " in your process model for the variable attaching a screenshot for your reference