Not able to send Data from Plugin Iframe to Field Service Cloud Screen

Summary

Not able to send Data from Plugin Iframe to Field Service Cloud Screen Name (cname) Field

Content

Hi,

We have a requirement to make the Name Filed searchable in Book Activity Screen (Mobility), so that Technician can search customer name instead of Typing. To achieve this functionality, we built a Plugin which opens an iframe. After selecting the value in iframe, it should stamp the selected value in the Name (cname) Field of Book Activity Screen.

But after selecting the value and submitting. the value is not getting stamped in the Name Field of Book Activity Screen and also not navigating back to the Book Activity Screen. Please help. The files created for Plugin development are attached.