a!startProcessLink is stuck at user input task

Hello, 

I am trying to design an interface when a technician clicks on "Accept Ownership" will trigger a process where we capture the user who clicked on the link and update the database.

Below is part the interface code for accept ownership.

a!sideBySideItem(
                     item: a!richTextDisplayField(
                       label: "Technician Name: ",
                       labelPosition: "ADJACENT",
                       value: {
                         if(
                           a!isNotNullOrEmpty(local!technicianInfo['recordType!{668f9fee-8c8c-4ec0-8719-8fe261ecebe6}CG Technician.fields.{28788328-2480-438c-be68-4a5bfccfa974}assignedto']),
                           local!technicianInfo['recordType!{668f9fee-8c8c-4ec0-8719-8fe261ecebe6}CG Technician.fields.{28788328-2480-438c-be68-4a5bfccfa974}assignedto'],
                           a!richTextItem(
                             text: "ACCEPT OWNERSHIP",
                             color: "NEGATIVE",
                             style: "STRONG",
                             link: a!startProcessLink(
                               processModel: cons!CG_Assign_Technician,
                               processParameters: {
                                 techName: loggedInUser()
                               },
                               bannerMessage: "process launched"
                             )
                           )
                        )
                       }
                     ),
                     width: "AUTO"
                   )

In the process model, I have created a process variable techName and mapped it to the form. After clicking on the Assign Technician link, I am able to trigger the process model as I was able to capture the loggedInUser() variable in PM. But, the process is stuck there. It is not going to the script task for some reason.

Any help is appreciated.

Thanks.