Just wonder if I could have some ways adding a percentage of weekly delta over the previous one on the top of each stacked bar in a bar chart widget like the one below.

I cannot get any further hint from the error message in red in this screenshot. Is there any clue or details about the connection failure that I could look for?

This YouTube video about submitting a FHIR transaction bundle impressed me. It shows me two things:

1. how a new resource (in the video, the Observation) referencing another new resource (the Patient) in the same bundle can be done, given that their link-up will be sorted out in the repository and reflected in the subsequent retrieval through a HTTP GET; and
2. how a conditional create with the PUT method may be achieved, in case we cannot tell if such a resource (e.g. the Patient with an identifier) to be submitted may or may not exist.