How to add unit {index_val} from UCUM?

Hi all!
I am using LOINC where one of the units is referred as using {index_val} but i can’t find a way of adding it in ADL designer.
Does anyone knows how to do it or does it have to be added to the property file?

eg: Valueset-ucum-units - FHIR v5.0.0-cibuild

@siljelb @borut.fabjan

Hi! This unit ‘{index_val}’ is basically the same as ‘1’, as anything in curly braces is disregarded by a UCUM parser.

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thank you!

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