constraint define 1 [L.lnincome] L.lnincome=1
constraint define 2 [L.lnpopulation] L.lnpopulation=1
constraint define 3 [L.lnaging] L.lnaging=1
constraint define 4 [lnhospeople] u=1
constraint define 5 [var(lnincome)] _cons=1
constraint define 6 [var(lnpopulation)] _cons=1
constraint define 7 [var(lnaging)] _cons=1

sspace (lnincome L.lnincome L.Llnincome,state nonconstant)///
(lnpopulation L.lnpopulation L.Llnpopulation,state nonconstant)///
(lnaging L.lnaging L.Llnaging,state nonconstant)///
(Llnincome L.lnincome,state nonconstant)///
(Llnpopulation L.lnpopulation,state nonconstant)///
(Llnaging L.lnaging,state nonconstant) ///
(u L.u,state nonconstant)///
(lnhospeople lnincome lnpopulation lnaging,noconstant noerror)///
  constraints(1/4) covstate(diagonal) vce(robust)

上面这个就是程序，求大神帮我看看