原问题如下：

Describe why the following code to create a towway table of the variables Var1 and Var2 under certain conditions(var3 is equal to 5 and var4 is less than 5 ) is wrong.how would you sugesst to correct it?

tab var1 var2 if var3=5 and var4<5

(explain why the command is wrong and then write the correct command)