How do I set a value to a multiselect (cascading) field via REST Jira?

[e]

I have been able to set a new summary via JIRA rest api (I took it from an example on the official web site). 

I did not find any example of how to set a multiselect field. The field is called "Car/Color". Its id is: customfield_15300. Car: Sedan Color: Yellow.

I am looking for a curl request example. Thanks. 

[Paula Silveira]

Hello there,

Please refer to JIRA REST API Example - Edit issues for further information.
I believe it might help you.

Thanks and regards,
Paula Silveira