RANKX on Table Expression

Hi There,

I have a smiple table:

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WclSK1YGRTmDSGUbGAgA=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Data = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Data", type text}})
in
    #"Changed Type"

I created a rank measure like this:

RankOnTable = RANKX(ALL('Table'),CALCULATE(MAX('Table'[Data])),,ASC)

Then I draged the table as this:

It seems perfect.

Then I created another measure to try to use a table expression:

RankOnTableExp = 
VAR DistinctTable = VALUES('Table'[Data])
VAR TableWithRank = ADDCOLUMNS(
    DistinctTable,
    "RANK",RANKX(DistinctTable,CALCULATE(MAX('Table'[Data])),,ASC)
)
VAR CurrentData = CALCULATE(MAX('Table'[Data]))
VAR CurrentDataRank = CALCULATE(MAXX(TableWithRank,[RANK]))
RETURN
    CurrentDataRank

Then I get the table which looks like:

Can anyone tell me what is wrong?

Thanks in advance