Check if Date prompt macro exist

[TT_T]

I´m getting a date(Name: start) over a prompt and i dont know, if symexist work on dates, because i have some problems...

%macro test;
    %global Var;
        %if %symexist(start) = 1 %then %do;
            %let Var = startdate is DATE(%bquote('&start'));;
            %end;
        %else %if %symexist(start)= 0 %then %do;
        %let Var= no startdate;
        %end;
%mend;

Edit:

%if %symexist(start) = 1 and %sysevalf(%superq(start)=,boolean) = 0 %then %do;

&

%if %symexist(start) = 1 and %sysevalf(%superq(start)=,boolean) = 1 %then %do;

That solved it.

[ballardw]

Your "that solved" implies that the prompt existed but for some reason there was no value assigned in some cases I believe.

[TT_T]

Right. The title is wrong -> check if prompt is empty or not would be better.

So %sysevalf(%superq(start)=,boolean).