%macro im_1m1excel(RootPath=,FileName=,Extension=);

libname MyExcel Excel "&RootPath.\&Filename..&Extension";
proc sql noprint;
select catx('.',libname,memname)
into: namelist separated by ' '
from dictionary.tables
where libname in ('MYEXCEL');
quit;

%put &namelist;
data &FileName;
set &namelist;
run;

%mend im_1m1excel;
%im_1m1excel(RootPath=E:\refer\导入excel,FileName=%str(3),Extension=xls);

也就是说
libname MyExcel Excel "E:\refer\导入excel\3.excel";

然后myexcel里面有myexcel.sheet1$ myexcel.sheet2$myexcel.sheet3$
我想把这三个数据集导出来，用如下程序
data a;
set myexcel.sheet1$;
run;
proc catalog cat=myexcel.sheet1$;
copy out=a;
quit;


都出错，显示“$”无法识别，怎么才可以把这三个数据集弄成sas数据集呢

不知道如何把“$”去掉，或者别的方法，求大神帮帮忙。