Issue Summary

When using the Send Web Request step and the value from a Single Select List, the Virtual Agent will not allow you to use customfield.value but will only allow you to use customfield.id.

Other custom field types such as Short Text allow you to us customfield.value

Steps to Reproduce

1. Create a Virtual Agent Intent.
2. Change the request type to one that uses a single select list custom field. 
3. Include that custom field in an Ask for Information step
4. Attempt to use customfield.value to get a human-readable version of the option. 
5. The system tells you that this is not supported. 

Expected Results

The Send Web Request would allow you to use customfield.value when using a single select list. 

Actual Results

The Virtual Intent builder will display the following error:

Users will have to translate the values from the select list on their application.

Workaround

customfield.value is supported by the other supported fields such as Short Text. If you need a human-readable value, we recomend using that option until this bug is resolved.