Cannot Template Array in Query

[CodeShellDev]

Describe the bug
When using a Variable like RECIPIENTS in the query (@recipients={{.RECIPIENTS}}) Arrays get resolved to [item0 item1] without any proper seperation like expected ([item0,item1])

To Reproduce
Steps to reproduce the behavior:

1. Start Container
2. Send Request with Recipients (Array) Variable in Query
3. See that Request fails at Signal API level because of malformed JSON Body

Expected behavior
An array should resolve to either item0,item1 or [item0,item1].