Hi,
What version of the gateway are you running? Until version 4.0.1 only sprig v2 functions are supported. After that v3 functions can be used
I should note that sprig functions aren’t evaluated in the dashboard’s API designer. Is that where you’re trying to use them? Unfortunately once sprig functions are used the transform has to be tested by publishing the API to the gateway and testing it via API calls. This is a bit harder but not impossible.
Please let me know the gateway version you’re using and provide a sample of the source and desired result data as well as your current API definition.
Cheers,
Pete