Using dashboard variables in transformations doesn't work (v10.2.1)

in “edit panel” you have this
that normaly give the query send to influx servee
question :
and with influx explorer your query (flux or sql) work with “.” ?

the screenshot mentioned above is the from query editor

the variable where i am using .* is trace id… and i can see it is undefined.

ok you have the same undefined with old and new version of grafana ?
with « 17181003 » as input value , have you results ?
can you show your query ?
but i ask at myself the same question … why with the same query in old version that ok but not with newest version?
good luck

have you solved your problem ?
good day