Is there any solution to set dynamic value instead of jason number field?

[GG]

I want to send an SMS to the Reporter according to the following scenario:
When the request is "waiting for information", I will post the following web service to the SMS sending software.

{"SmsText": "hi", "Receivers": "97812xxxxxxx, 97812xxxxxxxx,…",

"SenderId": "22000", IsUnicode: true, IsFlash: false, UDH: "" "CheckId": "",}

The problem is that in the web service of the SMS sender software, the mobile number is received as a number in Jason format, while this number changes dynamically according to the reporter. How can I send the mobile number field from reporter's profile in Jason format?

[Nic Brough _Adaptavist_]

How are you doing this send and where?  How have you stored the mobile number in Jira?

[GG]

I send it with provider web service (as json format).

I stored as a "mobile" custom field.

[Muhammad Ramzan]

I think you need to store it as custom field , currently the avaialble values for a user are 

'accountId', 'displayName', 'getProjectRoles', 'groups', 'permissions', 'properties'

https://support.atlassian.com/jira-software-cloud/docs/smart-values-users/

You might can try to explore the properties and might be you can get something usefull.