Using Global Variables inside Fields with JSONata

[LRagji]

Repro:

1. Use a simple stats widget,
2. Select datasource as JSONAPI
3. Rhen add this code in field $__from and you can see the time in milliseconds,
4. Change to this $fromMillis($__from) and the data disappears?

are global variables not supported as function param or am i missing escape character?

[paulinaptf]

I have a similar issue. I try to use my configured dashboard variable. It shows a correct value when I put it in a field alone. However, it does not work when I try to use it in a JSONATA expression.
I read in the documentation that the dashboard variables are always arrays and because of that it should be used with [] - $myvariable[0]. Unfortunately, then it is not possible to use such a variable in a repeatable raw for Grafana. Or is there any way to do this?