Web Report Studio - Percentile

[deleted_user]

Hi, I need to create a percentile function in Web Report Studio that work with rows of 1 column, but I found only PCTL function that work with more column of 1 row.
For example: I have 1 table on Oracle with 1 column "Measure" and 1 dimension "Region", I need to know the percentile 25° of all row of column "Measure".
I tried with PCTL function, but the result is all rows of table !

Can any one help me?