Webex send group message activity throwing error while attaching excel file path

[vnsatyasunil]

Hi. Need to send excel file in Webex chat space group message. Messages are delivering but while attaching file throwing error as shown in screenshot.

How to add file path in send group message activity file url field?

Please help anyone?

[vnsatyasunil]

how to upload files in file url field of webex send group message activity

in this expression editor how file path can be given?