SAS: assign quantile to macro variable

In SAS, how can I assign the 97.5% quantile of the normal distribution to a macro variable z

?

Doesn't work 1

%let z = quantile("normal", 0.975); 

      

        
        
        
      

    

Doesn't work 2

%let z = %sysfunc(quantile("normal", 0.975));