How to set varchar variable type loading a .sashdat file in CAS

[ElisabettaC]

Hi,

this is my code: 

proc casutil incaslib="public" outcaslib="public";
load casdata="test_import.sashdat"
casout="test_import";
quit;

I would like to know if there are options that allow me to set all alphanumeric variables in VARCHAR. 

Thank you

ElisabettaC