Hi all,   thanks a lot for your answers.   From your precious answers i can recap these logical steps:   1) rename the old variable 2) create a new variable with right format 3) put into the new variable the value of the old variable 4) drop the old variable   I still have difficult to understand how do this on my scenario:  I have X dataset which are used from X query into Visual Analytics. The dataset is created by a script like the following one which read values from a csv and write ( in append mode ) on a dataset :   libname MyLibrary 'C:\LibFolder'; data work.MyDataset ; %let _EFIERR_ = 0; /* set the ERROR detection macro variable */ infile 'C:\import\myfile.csv' delimiter = ';' MISSOVER DSD lrecl=32767 firstobs=2 ; informat var1 yymmdd8.; informat var2 best32.; informat var3 $2.; informat var4 $1.; informat var5 $2.; format var1 yymmdd8.; format var2 best32.; format var3 $2.; format var4 $1.; format var5 $2.; input var1 var2 var3 $ var4 $ var5 $ ; if _ERROR_ then call symputx('_EFIERR_',1); /* set ERROR detection macro variable */ run; proc append base=MyLibrary.MyDataset data=work.MyDataset; run;     If i do a a simply Select * from SAS compiler like the following one, i receive ERROR: La Libref MyLybrary is not assigned into the log   proc sql; select * from MyLbrary.mydataset ; quit;     So just to do the first step..... What i wrong ?                 ... View more

Hello,   i have the same error but i can't open the report ( so i can't "save as" it ). Someone has further solutions ?   Thanks you, D.         ... View more