FIRSTDATE doesn't work as expected

[HugoDataAve2023]

I created a simple measure = FIRSTDATE(Table[column].[Date]). In this column the first date is 2023-12-04, but when I put in the visual Card, it shows 2023-01-01. I having seen some people with problems using this function and others by helping improving formulas, however no one answer why doesn't work as expected?

PS.: I am not english native speaker, any doubt just ask.

[Dangar332 · Accepted solution]

hi, @HugoDataAve2023 

problem occure due to  (.[Date]) part
try only 

measure = FIRSTDATE(Table[column])

check below image and check my first date in left table

without (.[Date])

with (.[Date])

[HugoDataAve2023]

It work. Thanks.