SOAP UI: REST Request with query paramenetrs, which have multiple values, separated comma

I should test REST API, with query parameters, which have multiple values and they should be separated of comma. 

Example: GET https://test.com/feh1s4/v1/capacityAreas/teset?fields=id,label&parentGroupId=15 HTTP/1.1

I tried to use Multi-Value Delimeter, but it converted request to https://test.com/feh1s4/v1/capacityAreas/teset?fields=id&fields=label&parentGroupId=15 HTTP/1.1.

Could somebody help me to resolve this issue

Thanks in advance