shanghaiconnect是我定义的dummy variable， code如下：gen shanghaiconnect=0 if Accper<date("2014-11-17","YMD")& Markettype==1
replace shanghaiconnect=1 if Accper>=date("2014-11-17","YMD")& Markettype==1

在我定义之后想使用test功能来查看它与另一变量的coefficient 之和时，一直显示“shanghaiconnect"not found
数据样本如下：非常紧急，感谢大家
----------------------- copy starting from the next line -----------------------

------------------ copy up to and including the previous line ------------------