If I copy a shareable link to my test that uses defineVariable() and has no errors, it regenerates with an error. See example: https://fhirpath-lab.com/FhirPath?expression=Bundle.entry.resource.defineVariable(%27res%27).name.where(use%3D%27usual%27).defineVariable(%27name%27).select(%25res.where(name%20%3D%20%25name))&engine=fhirpath.js&resourceJson=N4KABGBEBOCmDOB7ArtAxrAKgTwA60gC4oAhZAOwBMAbAgGnClnIBdpsiwBtRiUCAVDhJUGTv0ECYCFOix4CxSAAUAhiwCWzFpAaSpGyp0iwAHqoC2uWgEZdvSZFVpNAN0Vg2yWHv1Rylh48fgISIRCQyPAekIgAZnEaaBqq1PbhUnGWGtQcSgDCABapFrDQ8OkZUADmGu7knMFVEcqwLGWVzZAAUoEVDiEAugOSAL4jEMP644Kjvnwj0iJy4hNCMqLy+MZqmtqdjobGZpbWsABMB4JOLnUeXj5rkAGljWsLXVExUcipV36QWr1N7NCLdDQWSDvARTcIzPyw2YOOYOMJSYSyMTENHXDGbHDbJS7LSsf4RI5KE5WWgAZjJUGcbnu0G880cLyC0JxAK+xgsqkMzHp1yyFhyeSgAHUNFQkNBhVIgULiE0uq12vK2Rken0oc1BlqAfhoBpEEZsdDrsxzVBzgAGO2XS1geEhV2SRECd3w4ajIA&terminologyserver=https%3A%2F%2Fsqlonfhir-r4.azurewebsites.net%2Ffhir