Can systemd_filter partially match on the unit name (with wildcards)

[dc6c]

Many systemd commands allow wildcards for unit names, which is especially useful for parameterized units (e.g., "[email protected]", where multiple instances of the unit can be started by the operator and end up with arbitrary IDs following @ in the instance name (e.g., "[email protected]"). But systemd_filter=_SYSTEMD_UNIT=<unit-name> seems to only match exactly, with no way to use wild cards for flexible matching. Is that really the case, and is there an alternative way to more flexibly filter on a part of the unit name?